Learn 35+ high-yield MCAT mnemonics for amino acids, biology, biochemistry, physics, chemistry, and Psych/Soc, plus how to study them with Anki.
MCAT Mnemonics and Acronyms: 35+ High-Yield Memory Tricks for Biology, Biochemistry, Physics, and Psych/Soc
Memorizing MCAT content can feel endless because you are expected to keep track of information from biology, biochemistry, general chemistry, organic chemistry, physics, psychology, and sociology while also learning how to apply that information inside passages. I found that one of the biggest challenges during my own MCAT preparation was not simply learning a concept once, but keeping hundreds of concepts accessible while I moved on to new material.
I relied heavily on Anki during my own studying, with MileDown serving as my main deck and some JackSparrow added when I wanted more detail. That experience changed the way I think about mnemonics because I do not think an acronym should replace understanding, and I definitely would not recommend memorizing fifty strange phrases just because somebody on Reddit says they are high yield. I think mnemonics are most useful when you already understand the underlying concept and simply need a memorable hook that helps you retrieve it quickly.
That is what I have tried to build here. I went back through the mnemonic collection on AspiringMD, corrected several inaccuracies in the older version, removed shortcuts that I thought were more confusing than helpful, and organized the stronger ones by subject so you can actually use this page while studying.
The AAMC’s official content outline includes many of the topics covered below, including amino-acid properties, nucleic acids, metabolism, organ systems, nervous and endocrine physiology, circuits, electrochemistry, optics, thermodynamics, and behavioral science. A mnemonic does not make a topic important by itself, so I still recommend using the official AAMC outline to decide what deserves your study time.
I have a complete guide to the official AAMC content outline here: AAMC MCAT Topic List PDF and Complete Guide. I would use that as your master content map and return to this page whenever you find a sequence, category, or relationship that simply refuses to stick.
How I Would Actually Use MCAT Mnemonics
During my MCAT preparation, active recall was much more useful to me than repeatedly rereading material, which is one reason MileDown became such an important part of my studying. When something was difficult to remember, I wanted a short cue that helped me retrieve the information and then get back to practice rather than another paragraph that I had to reread twenty times.
That is how I would use the mnemonics below. Learn the concept first, attach a mnemonic to the part that is difficult to retrieve, and then put that mnemonic into Anki or another active-recall system. Eventually, you want the underlying information to come to mind almost automatically rather than needing to laboriously decode the phrase every time.
I would also be selective. If you already remember that vitamins A, D, E, and K are fat soluble without thinking about it, you do not need to spend study time practicing the acronym ADEK. If you continually reverse Southern and Northern blots, however, SNoW DRoP may save you from making the same mistake repeatedly.
My MileDown guide is here if you want the deck I personally used most: MileDown MCAT Anki Deck. If you want substantially more detailed cards, I also have a guide to JackSparrow, which I used to a lesser extent because I found some of the longer cards more strenuous to work through consistently.
MCAT Biology and Biochemistry Mnemonics
Biology and biochemistry are probably where mnemonics helped me make the most conceptual sense because there are so many categories, pathways, sequences, and abbreviations that can blur together. The AAMC explicitly includes amino-acid properties, protein structure, nucleic acids, gene expression, metabolism, nervous and endocrine physiology, development, organ systems, genetics, and biotechnology within the Biological and Biochemical Foundations framework.
SNoW DRoP: Southern, Northern, and Western Blots
SNoW DRoP is one of my favorite science mnemonics because the capitalization almost gives you the answer. Think Southern = DNA, Northern = RNA, Western = Protein, which gives you S-No-W and D-Ro-P.
The mnemonic is especially useful because the names themselves do not intuitively tell you what is being detected. Southern blotting is associated with DNA, Northern blotting with RNA, and Western blotting with proteins, so I would memorize the distinction before you begin doing biotechnology-heavy passages. The AAMC content outline includes nucleic-acid analysis and biotechnology within its gene-to-protein content category.
If laboratory techniques are one of your weaker areas, I also have the free IWantAHighMCATScore MCAT Lab Techniques PDF, which gives you much more context than a mnemonic alone.
SNoW DRoP Does Not Tell You Everything About Blotting
I would not stop after memorizing DNA, RNA, and protein. You should also understand what separation method generally precedes detection, why molecules move through a gel, how probes or antibodies identify a target, and what the pattern of bands actually allows you to conclude.
That distinction matters because the MCAT may not simply ask, “Which blot detects RNA?” Instead, a passage may describe an experiment and expect you to infer which technique would answer the research question. The AAMC emphasizes using scientific concepts alongside research design and data interpretation rather than testing factual recall in isolation.
SAME DAVE: Sensory and Motor Neurons
SAME DAVE helps me separate information that is very easy to reverse. SAME stands for Sensory Afferent, Motor Efferent, while DAVE reminds you that the Dorsal root is Afferent and the Ventral root is Efferent.
I would connect the words rather than memorizing the letters blindly. Sensory information is arriving at the central nervous system through afferent pathways, while motor information exits through efferent pathways. The AAMC specifically includes nerve-cell structure, sensory pathways, nervous-system organization, and integration of nervous and endocrine functions.
Please Excuse My Stinky Cat / He Gets Muddy Paws: Stomach Cells and Secretions
A quirky mnemonic from the original version of this article that I still think works is Please Excuse My Stinky Cat / He Gets Muddy Paws. The first phrase can remind you of Parietal, Endocrine/G cells, Surface mucous, and Chief cells, while the second phrase gives HCl, Gastrin, Mucus, and Pepsinogen in corresponding order.
I would add one important detail when learning it. Parietal cells also produce intrinsic factor, while the gastrin-producing endocrine cells are specifically G cells. A mnemonic is useful for getting the four relationships into memory, but understanding how acid, gastrin, mucus, pepsinogen, and intrinsic factor contribute to digestion makes the information much easier to apply in a physiology passage. Major digestive-system structure and function are part of the AAMC biology content outline.
My Baby Grows Nicely: Early Embryonic Development
My Baby Grows Nicely gives you Morula, Blastula, Gastrula, Neurula. I like this one because the order is what usually causes trouble, and the first letters give you a quick sequence without requiring a long explanation.
Make sure you understand what is happening during those transitions rather than memorizing four names. Gastrulation establishes the primary germ layers, while neurulation is associated with development of the neural tube, so those stages become much easier to remember when you connect them with the developmental event taking place. Embryogenesis and differentiation are included within the AAMC’s development content.
DJI: Duodenum, Jejunum, Ileum
For the small intestine, think DJI: Duodenum, Jejunum, Ileum. You can also remember the phrase Dow Jones Industrial if three letters by themselves are not memorable enough.
The order is useful, but again I would not stop there. Know that the small intestine is a major site of digestion and nutrient absorption and understand how different accessory organs and digestive secretions contribute to the process. The AAMC includes digestive-system structure and function in its organ-system content.
Can I Keep Selling Seashells For Money, Officer?: Citric Acid Cycle
For the major citric acid cycle intermediates, I like Can I Keep Selling Seashells For Money, Officer? This corresponds to Citrate, Isocitrate, alpha-Ketoglutarate, Succinyl-CoA, Succinate, Fumarate, Malate, Oxaloacetate.
One correction I would make from the older AspiringMD mnemonic list is not to place pyruvate itself at the beginning of the citric acid cycle. Pyruvate is converted to acetyl-CoA, and acetyl-CoA enters the cycle by combining with oxaloacetate to produce citrate. The AAMC includes glycolysis, pyruvate metabolism, the citric acid cycle, oxidative phosphorylation, and regulation of fuel metabolism in its bioenergetics content.
I would also learn what the cycle produces rather than only memorizing the intermediate order. If you understand when NADH, FADH2, GTP, and CO2 are generated and how those products connect to oxidative phosphorylation, the sequence becomes a framework rather than a meaningless string of names.
CUT the Pyrimidines, and Purines Are AG
The classic nucleotide mnemonic Pyrimidines CUT gives you Cytosine, Uracil, and Thymine. Once those three are accounted for, the purines are Adenine and Guanine, and I like remembering those with Pure As Gold, where A and G point you toward adenine and guanine.
The AAMC explicitly includes nucleotides, nucleosides, purine and pyrimidine residues, DNA, RNA, transcription, and translation. I would make sure you also know that thymine is normally used in DNA while uracil replaces it in RNA, rather than treating CUT as an isolated vocabulary trick.
U Go Away, U Are Away, U Are Gone: Stop Codons
The three RNA stop codons are UGA, UAA, and UAG. A convenient mnemonic is U Go Away, U Are Away, U Are Gone, which matches UGA, UAA, and UAG.
Translation termination and stop codons are explicitly included within the AAMC gene-to-protein content category. I would pair the mnemonic with the start codon AUG, which codes for methionine, so you can quickly recognize both initiation and termination information in a genetics passage.
EXons Are EXpressed
For RNA processing, EXons are EXpressed is a simple way to remember that exons remain in mature RNA after splicing. I would avoid the older phrase saying introns simply go “in the trash” because the important MCAT-level concept is that introns are removed during RNA processing, not that they are biologically meaningless.
The AAMC includes transcription, RNA processing, and translation in its gene-expression framework. If you see a question involving alternative splicing, the distinction becomes especially important because different exon combinations can contribute to different mature transcripts.
MCAT Amino Acid Mnemonics
Amino acids deserve their own section because the AAMC explicitly expects you to understand their classifications, acidic and basic behavior, hydrophobic and hydrophilic properties, peptide linkages, sulfur linkages, and the relationship between amino-acid chemistry and protein structure. I would know all 20 well enough that a mnemonic becomes a retrieval shortcut rather than the only thing connecting you to the structure.
GAVLIMP: Nonpolar Aliphatic Amino Acids
For the major nonpolar aliphatic group, remember GAVLIMP, which stands for Glycine, Alanine, Valine, Leucine, Isoleucine, Methionine, Proline. If a word is easier than letters, I use the phrase Grandma Always Visits London In May, Proudly, which preserves the same G-A-V-L-I-M-P sequence.
This grouping is more accurate than the older version of this page, which tried to place virtually all hydrophobic and aromatic amino acids into one mnemonic. Phenylalanine and tryptophan are aromatic and generally hydrophobic, while tyrosine is aromatic but has a polar phenolic hydroxyl, so I think it is easier to keep the aromatic group separate. The AAMC specifically lists hydrophobic and hydrophilic amino-acid classification.
FWY: Aromatic Amino Acids
The aromatic amino acids are Phenylalanine, Tryptophan, and Tyrosine, whose one-letter codes give you F, W, Y. I would simply learn FWY = aromatic rather than inventing a complicated sentence.
The chemistry is more important than the letters. Phenylalanine is strongly hydrophobic, tryptophan contains a large indole ring and is generally hydrophobic, while tyrosine has a phenolic hydroxyl that makes it more polar and gives it additional chemical behavior.
DE Is Acidic, KRH Is Basic
The two acidic amino acids are Aspartic acid and Glutamic acid, whose one-letter codes are D and E. The standard basic group is Lysine, Arginine, and Histidine, giving you K, R, H.
I would be careful with histidine because it behaves differently from lysine and arginine. Lysine and arginine are generally positively charged near physiological pH, while histidine’s imidazole side chain has a pKa close enough to physiological conditions that its protonation state can vary with the local environment.
Santa’s Team Needs Quilts: Polar Uncharged Core Group
A simple mnemonic for four very commonly grouped polar uncharged amino acids is Santa’s Team Needs Quilts, giving you Serine, Threonine, Asparagine, Glutamine, or S-T-N-Q. Cysteine and tyrosine are also commonly discussed as polar uncharged residues because of their thiol and phenolic hydroxyl groups, so I would understand those nuances rather than trying to force every amino acid into one perfect mnemonic category.
This is also where I need to correct an actual error from the previous version of this AspiringMD page. N is asparagine, not arginine. Arginine’s one-letter abbreviation is R, while asparagine uses N.
If amino acids still feel shaky, I would not keep adding more mnemonics. I built a much more comprehensive free MCAT amino-acid quiz and study guide where you can practice names, structures, one-letter codes, properties, and classifications until recognition becomes automatic.
Endocrine and Nervous System Mnemonics
The AAMC expects students to understand the structure and function of the nervous and endocrine systems and how they interact. Hormones are a perfect place for mnemonics because there are several similar abbreviations, but this is also an area where one wrong letter can teach you something completely incorrect.
FLAT PEG: Anterior Pituitary Hormones
The classic FLAT PEG mnemonic stands for FSH, LH, ACTH, TSH, Prolactin, Endorphins, Growth hormone. The important correction from the older AspiringMD page is that the G is growth hormone, GH, not GHRH.
GHRH is a hypothalamic releasing hormone that stimulates growth-hormone secretion, while GH itself is secreted by the anterior pituitary. Major anterior pituitary hormones include GH, prolactin, ACTH, TSH, FSH, and LH. I would learn the target organ and major effect of each hormone after you have the names memorized, because the MCAT is much more likely to make you reason through a feedback loop than simply recite FLAT PEG.
Posterior Pituitary: ADH and Oxytocin
For the posterior pituitary, the pair is much easier: ADH and oxytocin. I would remember that these hormones are synthesized in hypothalamic neurons and transported to the posterior pituitary for storage and release, rather than imagining that the posterior pituitary synthesizes them independently.
This distinction fits with the broader hypothalamic-pituitary organization tested within endocrine physiology. Once the basic anatomy is clear, negative feedback loops involving the hypothalamus, pituitary, and peripheral endocrine organs become much easier to reason through.
Na Na Na Out, K K In: Sodium-Potassium ATPase
The sodium-potassium ATPase moves three Na+ ions out of the cell and two K+ ions into the cell per ATP hydrolyzed. I remember the rhythm as Na, Na, Na, get out; K, K, come in, which is simple enough that the stoichiometry sticks.
The larger concept is more important than the rhyme. The pump helps maintain ion gradients across the membrane, and those gradients contribute to membrane potential and neuronal signaling, topics included in the AAMC nervous-system framework.
Dynein Drives In, Kinesin Kicks Out
For the usual MCAT-level simplification of microtubule motors, I think Dynein Drives In, Kinesin Kicks Out is easier than memorizing two definitions independently. Cytoplasmic dynein generally moves cargo toward the microtubule minus end and cell center, while many conventional kinesins move toward the plus end and cellular periphery.
Biology is more complicated than a two-word mnemonic because different motor proteins can have specialized behaviors, but the inward-versus-outward relationship is a useful introductory retrieval cue. I would use it to orient yourself and then rely on passage information if an experiment specifies a particular motor or microtubule arrangement.
Genetics, Cell Biology, and Immunology Mnemonics
These are the kinds of facts that I think work especially well in Anki because each relationship can be tested in a short card. I would still keep the cards focused so that remembering one mnemonic does not become a substitute for understanding the experimental context.
Never Let Monkeys Eat Bananas: White Blood Cell Types
Never Let Monkeys Eat Bananas gives you Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils, which is the usual decreasing order of abundance in a normal adult differential. The older version of this article incorrectly put macrophages in the sequence, but the circulating leukocyte type is the monocyte; macrophages are differentiated tissue cells derived from monocytes.
I would remember the basic functions as well. Neutrophils are major acute phagocytic responders, lymphocytes include important adaptive immune populations, monocytes can differentiate into macrophages and related cells, eosinophils are especially associated with parasites and allergic responses, and basophils participate in inflammatory and allergic responses.
GAMED: The Five Immunoglobulin Classes
The five major immunoglobulin classes are IgG, IgA, IgM, IgE, and IgD, which gives you GAMED. The acronym gets the names into memory quickly, but I would then attach one or two defining characteristics to each class rather than trying to memorize an enormous table in one sitting.
For example, think about which antibody predominates in a primary versus secondary response, which is important in mucosal secretions, which is associated with allergic responses and parasites, and which exists prominently on naïve B-cell surfaces. The AAMC includes immune-system structure and function within the Biological and Biochemical Foundations content.
PMAT: Mitosis
The major stages of mitosis are Prophase, Metaphase, Anaphase, Telophase, giving you PMAT. This is one of those mnemonics that becomes almost unnecessary after enough repetition, but it is still useful when you first learn the sequence.
Make sure you know what happens during each stage rather than only the names. Chromosome condensation, metaphase alignment, chromatid separation, and reformation of nuclei are the kinds of relationships that make PMAT useful in a passage about cell division. The AAMC includes the cell cycle, mitosis, meiosis, cancer, and differentiation in its content outline.
Maggie May Does Not Smoke: Hardy-Weinberg Assumptions
Maggie May Does Not Smoke can remind you of conditions that must be absent for ideal Hardy-Weinberg equilibrium: Mutation, Migration, Drift, Nonrandom mating, Selection. Translating that into positive assumptions gives you no mutation, no gene flow, an extremely large population so genetic drift is negligible, random mating, and no natural selection.
I think translating the mnemonic into the actual biological conditions is essential because the MCAT may ask which assumption has been violated rather than asking you to recite a phrase. Population genetics, mutation, genetic drift, gene flow, and natural selection are included in the AAMC’s evolution and genetics content.
EXons EXpressed, Introns Spliced Out
EXons are EXpressed is still the easiest cue I know for remembering which pieces remain in mature messenger RNA after splicing. I would pair it with the plain-language relationship that introns are removed during RNA processing, which is more accurate than treating them as meaningless genetic trash.
Alternative splicing also means different combinations of exons can contribute to different mature transcripts and proteins. Gene expression, transcription, RNA processing, and translation are all within the AAMC’s gene-to-protein content category.
Acetylation Makes Chromatin More Accessible
For histones, I prefer the conceptual mnemonic Acetylation = Accessible. Histone acetylation generally reduces the strength of electrostatic interactions between positively charged histone lysines and negatively charged DNA, which is associated with a more open chromatin state and increased transcriptional accessibility.
I would specifically remove the old mnemonic saying histone methylation always mutes transcription. Histone methylation can be associated with either activation or repression depending on which residue is methylated, so “methylation = muted” is an unsafe shortcut to memorize.
Digestive, Reproductive, and Musculoskeletal Mnemonics
These systems contain many anatomical sequences that are easier to remember when you can turn them into a route. The AAMC includes digestive, reproductive, muscular, skeletal, respiratory, circulatory, immune, and excretory systems within its major organ-system content.
Some Educated Voters Elect Useful Presidents: Sperm Pathway
For the pathway sperm follows, I prefer Some Educated Voters Elect Useful Presidents. That gives you Seminiferous tubules, Epididymis, Vas deferens, Ejaculatory duct, Urethra, Penis.
This is clearer to me than the older “SEVEN UP” mnemonic because every letter actually corresponds to a structure you need to remember. Once the pathway is memorized, connect the structures with what occurs there, especially sperm production, maturation, storage, transport, and the contribution of accessory gland secretions.
BMT and BBL: Tendons vs. Ligaments
A short relationship that I think is worth memorizing is BMT: Bone-Muscle-Tendon and BBL: Bone-Bone-Ligament. In other words, tendons connect muscle to bone, while ligaments connect bone to bone.
This is simple enough that you probably will not need the mnemonic for long, which is exactly what I want from a good memory aid. The mnemonic should become disposable once the relationship itself feels obvious.
ADEK: Fat-Soluble Vitamins
The fat-soluble vitamins are A, D, E, and K, which makes ADEK one of the easiest mnemonics on this page. The remaining major vitamins are water soluble, although knowing the functional roles and deficiency patterns is more important than simply dividing them into two categories.
Vitamins also appear in biochemical contexts as coenzymes and cofactors, which is why I would connect the letters to metabolic function as you progress through content review. The AAMC includes vitamins and coenzymes within enzyme structure and function.
General Chemistry and Organic Chemistry MCAT Mnemonics
Chemistry mnemonics are most helpful when they reduce a directional relationship that students commonly reverse. I would be cautious about using them for topics that require actual calculation because no phrase replaces knowing what an equation means.
OIL RIG: Oxidation and Reduction
OIL RIG stands for Oxidation Is Loss, Reduction Is Gain, referring to electrons. This remains one of the simplest and most useful chemistry mnemonics because oxidation and reduction appear in general chemistry, organic chemistry, biochemistry, electrochemistry, and metabolism.
The AAMC explicitly includes oxidation-reduction chemistry and electrochemical cells in the Chemical and Physical Foundations content. Once OIL RIG is automatic, make sure you can identify which species is the oxidizing agent and reducing agent rather than only identifying what happened to one molecule.
RED CAT, AN OX: Electrochemical Electrodes
RED CAT, AN OX means Reduction at the Cathode, Oxidation at the Anode. I like pairing this with OIL RIG because one mnemonic tells you what happens to electrons while the other tells you where the half-reaction occurs.
This relationship remains true in galvanic and electrolytic cells, although the signs of the electrodes change depending on the cell type. Electrochemical cells, anodes, cathodes, electron flow, reduction potentials, and oxidation-reduction half-reactions are all explicitly included in the AAMC outline.
AHA: Henderson-Hasselbalch Numerator and Denominator
For the Henderson-Hasselbalch equation, think AHA, where A- goes on top and HA goes on the bottom:
pH = pKa + log([A-]/[HA])
I like this mnemonic because students often understand buffers perfectly but reverse the acid and conjugate-base concentrations when trying to recall the formula under pressure. Acids, bases, buffers, pH, and acid-base equilibria are part of the AAMC Chemical and Physical Foundations content.
Promoter Gets Polymerase, Operator Gets Repressor
For prokaryotic gene regulation, I remember the simple pairing Promoter-Polymerase, Operator-Repressor. RNA polymerase binds the promoter to initiate transcription, while regulatory proteins such as repressors can bind operator sequences and alter transcription.
This is more of an association than a traditional acronym, but I think that is fine. The point of a mnemonic is retrieval, not creating the cleverest sentence possible, and gene-expression regulation is explicitly included in the AAMC content outline.
Physics MCAT Mnemonics
Physics is where I would use the fewest mnemonics because understanding equations and relationships usually matters more than memorizing slogans. Still, a few directional and series-versus-parallel relationships are worth having available quickly.
CSI: Capacitors in Series Add Inversely
CSI reminds you that Capacitors in Series add Inversely:
1/Ceq = 1/C1 + 1/C2 + …
The counterpart is that capacitors in parallel add directly. Circuit elements and capacitor combinations are explicitly included in the AAMC Chemical and Physical Foundations outline.
I would pair this with the reason the rule feels different from resistors rather than memorizing two unrelated equations. Understanding the circuit behavior makes it less likely that you will reverse the relationships when a passage gives you an unfamiliar diagram.
RIP: Resistors In Parallel Add Inversely
RIP stands for Resistors In Parallel, reminding you that parallel resistors add inversely:
1/Req = 1/R1 + 1/R2 + …
Resistors in series add directly, so CSI and RIP give you the two combinations where the reciprocal relationship is used. The AAMC specifically lists resistors in series and parallel and capacitors in series and parallel.
Myopia Is Minus, Hyperopia Is Plus
For corrective lenses, I prefer the simple relationship Myopia = Minus. Myopia, or nearsightedness, is corrected with a diverging lens, which has negative focal power, while hyperopia, or farsightedness, is corrected with a converging lens with positive focal power.
This is easier for me than memorizing a long sentence about dogs and candy, which appeared in the previous version of this article. The AAMC includes lenses, focal length, image formation, and optics within its light and sound content.
If I Do, I Die: Thin-Lens Equation
For the thin-lens equation, If I Do, I Die gives you f, do, di, which can remind you of:
1/f = 1/do + 1/di
I would only use the phrase until the equation becomes automatic. You still need to understand the sign conventions, object distance, image distance, focal length, magnification, and whether a resulting image is real or virtual, because those are what make the equation useful in an MCAT question. Optics and lenses are explicitly included in the AAMC content outline.
Q = CV: Charge, Capacitance, Voltage
For capacitors, simply say Q-C-V in order: Charge equals Capacitance times Voltage, or Q = CV. I do not think this relationship needs a complicated sentence because the letters themselves are memorable once you have seen enough circuit questions.
The important part is understanding how charge, capacitance, voltage, stored energy, and series or parallel arrangements interact. Those capacitor relationships are included in the AAMC’s circuits content category.
HypOtonic Makes a Cell Round Like an O
For tonicity, the visual cue hypOtonic → O-shaped swollen cell can help remind you that water moves into a cell placed in a hypotonic extracellular solution, causing the cell to swell. In a hypertonic environment, water instead moves out and the cell shrinks.
I would connect that mnemonic directly to osmosis rather than memorizing the outcome alone. Water moves across a selectively permeable membrane toward the side with greater effective solute concentration, which lets you reason through unfamiliar tonicity situations rather than depending on a word trick.
If physics equations are one of your bigger weaknesses, I would use my free MCAT equation formula sheet alongside these mnemonics. I would treat the formula sheet as a master reference and use Anki to repeatedly retrieve whichever relationships you actually forget.
Psychology and Sociology MCAT Mnemonics
Psychology and Sociology contains enough vocabulary that this is one of the easiest sections to overload with acronyms. I would use mnemonics for sequences and easily reversed concepts while still learning the theories well enough that you can identify them in research scenarios and passage examples.
OCEAN: Big Five Personality Traits
The Big Five personality traits are Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism, giving you OCEAN. This is probably one of the cleanest Psych/Soc acronyms because the word itself is memorable and maps perfectly onto the five traits.
I would know what high and low levels of each trait actually look like rather than simply being able to expand OCEAN. Personality theories and traits are part of the behavioral science framework in the AAMC content outline.
Please Stop Buying Stupid Stuff: Maslow’s Hierarchy
For the traditional five-level version of Maslow’s hierarchy, Please Stop Buying Stupid Stuff gives you Physiological, Safety, Belonging/Love, Self-esteem, Self-actualization from lower to higher needs.
The mnemonic is useful for the order, but make sure you understand the basic theory that lower-level needs are generally described as taking precedence before progressively higher-order needs. Motivation and theories related to behavior are part of the MCAT behavioral science content.
Some People Can Fly: Piaget’s Cognitive Development Stages
Some People Can Fly corresponds to Sensorimotor, Preoperational, Concrete operational, Formal operational. I like this one because the stages are often tested through an example of what a child can or cannot do rather than by simply asking for the names.
Once you know the order, attach the major concepts to each stage, such as object permanence, symbolic thought, conservation, and abstract reasoning. Cognitive development is part of the psychology content assessed on the MCAT.
Old Age Pensioners Love Golf: Freud’s Psychosexual Stages
For Freud’s traditional psychosexual stages, Old Age Pensioners Love Golf gives you Oral, Anal, Phallic, Latency, Genital. This is cleaner than the phrase that was previously on the AspiringMD page and still preserves the same O-A-P-L-G sequence.
I would understand fixation and the broad developmental idea associated with the theory rather than memorizing Freud as a five-word list. The behavioral science section expects you to compare psychological theories and apply them to behavior rather than only reproduce definitions.
Wernicke Understands Words; Broca Has Broken Speech
For language regions, I like the conceptual contrast Wernicke understands words; Broca has broken speech. Wernicke-related deficits classically affect language comprehension, while Broca-related deficits classically impair fluent speech production.
The exact neurological presentations can be more nuanced than one sentence, but the mnemonic gives you the central distinction most useful for MCAT-level questions. Language, cognition, and biological bases of behavior are included within the behavioral science content.
Beta Awake, Alpha Relaxed, Theta N1, Delta Deep
I would replace the old sleep-wave mnemonic on AspiringMD because it incorrectly described delta waves as “sleeping/dreaming.” A more accurate progression is Beta = alert wakefulness, Alpha = relaxed wakefulness, Theta = N1/light sleep, Delta = deep N3 sleep, while N2 is especially associated with sleep spindles and K-complexes and REM has relatively wake-like, mixed-frequency activity.
Dreaming is especially associated with REM, although dreams can also occur during NREM sleep. I would therefore remember Delta = Deep, rather than Delta = Dream, because confusing those two words teaches the wrong relationship.
Positive Adds, Negative Removes; Reinforcement Raises, Punishment Reduces
Operant conditioning becomes much easier when you stop treating “positive” as good and “negative” as bad. Positive means something is added, while negative means something is removed; reinforcement increases a behavior, while punishment decreases a behavior.
That gives you all four combinations without memorizing four disconnected definitions. Positive reinforcement adds something to increase behavior, negative reinforcement removes something to increase behavior, positive punishment adds something to decrease behavior, and negative punishment removes something to decrease behavior. Learning and operant conditioning are explicitly part of the AAMC behavioral science outline.
HIPPO HAT: A Useful Limbic-System Memory Hook
A common memory hook is HIPPO HAT, which points you toward the hippocampus, hypothalamus, amygdala, and thalamus when reviewing structures commonly discussed around limbic function. I would treat this as a study grouping rather than a rigid anatomical definition because descriptions of the limbic system vary and not every source draws exactly the same boundaries.
For MCAT purposes, it is more useful to know the major functional associations: hippocampus with memory, amygdala with emotional processing and fear, hypothalamus with homeostatic and endocrine regulation, and thalamus with major sensory relay functions. Biological bases of behavior and nervous-system function are part of the AAMC behavioral science framework.
Mnemonics I Would Not Use Anymore
I think an E-E-A-T-focused resource should tell you when a memory trick is bad rather than simply making the list longer. The previous version of this page included several shortcuts that were either inaccurate or so oversimplified that I think they create more risk than value.
I would remove the statement that histone methylation always silences transcription, because methylation can be associated with activation or repression depending on the residue and modification involved. I would also remove the older “Kingdoms” mnemonic using Monera, Protista, Fungi, Plants, and Animals because that historical five-kingdom system is not something I would prioritize for modern MCAT study over material directly represented in the current AAMC content outline.
I would correct Arginine (N) to Asparagine (N), replace GHRH with GH in FLAT PEG, replace macrophages with monocytes in the circulating white-cell mnemonic, and replace the misleading Delta = dreaming association with Delta = deep N3 sleep.
This is one of the reasons I do not recommend blindly downloading a giant mnemonic list and memorizing everything on it. A memory trick is powerful precisely because it sticks, which means an inaccurate mnemonic can make a mistake harder to unlearn than if you had never memorized anything at all.
How I Would Put These Mnemonics Into Anki
If I were studying again, I would not create one card called “MCAT Mnemonics” with thirty-five phrases on the back. I learned from using MileDown that I preferred focused cards that I could answer quickly and grade honestly, and I would apply that same principle here.
For SNoW DRoP, for example, I might make one card asking what Southern blotting detects and another asking which blot I would choose to detect RNA. For OCEAN, I might ask myself to reproduce all five traits, but then I would also have application cards where a brief personality description forces me to identify the relevant trait.
For an equation or sequence, I would sometimes put the mnemonic in the extra-information field rather than on the front of the card. That way, I first try to retrieve the actual concept and only see the memory aid after answering.
This is also why MileDown worked well for me. I liked having concise prompts that supported the rest of my studying rather than turning every card into its own content-review chapter. If you want substantially more detail, JackSparrow or Aidan can make sense, but the same rule still applies: use mnemonics to make retrieval easier without allowing them to replace the underlying science.
When a Mnemonic Should Be Deleted From Your Anki Card
You do not need to keep using a mnemonic forever. Once ADEK immediately means fat-soluble vitamins or OIL RIG automatically translates into electron loss and gain, the memory aid has done its job.
If the mnemonic itself begins taking longer to decode than simply recalling the fact, I would remove it from the front of the card or move it into the extra field. Your eventual goal is direct retrieval, where seeing “Southern blot” immediately brings DNA to mind without mentally spelling SNoW DRoP every time.
That is another reason I like using mnemonics with spaced repetition. Repeated exposure gradually turns an initially artificial phrase into automatic knowledge, at which point the phrase becomes less important.
Make Your Own MCAT Mnemonics for Things You Personally Miss
The mnemonics you create yourself can sometimes be easier to remember than the ones you find online because they connect with something that is already meaningful to you. If you continually reverse two concepts, make the memory aid specifically about the feature you reverse.
I would particularly do this after practice questions. If you miss a question because you could not remember which electrode is the site of reduction, RED CAT may solve the problem. If you missed the question because you misunderstood how electrochemical cell potential works, however, another acronym is probably not the answer.
This distinction became increasingly important to me as I studied because I did not want every mistake to turn into another flashcard. Sometimes the answer was more content review, sometimes it was an Anki card, and sometimes I simply needed more practice reasoning through the way the MCAT presented the information.
Pair Mnemonics With Practice Questions
The AAMC describes the MCAT as an exam that combines scientific knowledge with inquiry and reasoning skills, which is why memorization alone cannot carry your preparation. You eventually need to recognize the concept when it is hidden inside an experiment, graph, research design, or unfamiliar biological situation.
If you memorize SNoW DRoP, find biotechnology questions where you have to choose the appropriate technique. If you memorize RED CAT AN OX, work through galvanic and electrolytic cell questions. If you memorize amino-acid groups, practice mutations, protein charge, electrophoresis, and enzyme questions.
That is where the mnemonic becomes useful instead of decorative. The phrase gets the information into working memory quickly, and practice teaches you what to do with it.
Use Full-Length Exams to Find the Mnemonics You Actually Need
After each full-length exam, I would look for mistakes that came from repeatedly reversing or forgetting a simple relationship. Those are excellent candidates for mnemonics because a small retrieval failure is often fixable with a compact memory hook.
If you miss three questions because you cannot reason through experimental design, however, I would not create three clever acronyms and hope the problem disappears. I would review the experiment carefully, understand the independent and dependent variables, and practice interpreting more research passages.
I built a free MCAT full-length review template specifically for this kind of error analysis. I think separating content errors from reasoning errors is one of the most useful things you can do because it keeps your study response matched to the actual problem.
Do Not Memorize Every Mnemonic on This Page
This may sound strange in an article about MCAT mnemonics, but I do not think you should memorize all of them simply because they are here. The goal is fewer things to remember, not turning a collection of memory aids into another giant content list.
If PMAT is already automatic, skip it. If you never confuse the three blots, you probably do not need SNoW DRoP. If series versus parallel circuits continually cost you questions, CSI and RIP may deserve much more repetition.
I approached MCAT resources the same way more generally. I used MileDown extensively because it fit my needs, added some JackSparrow where I wanted more depth, and did not feel that I needed to complete every popular deck just because another student liked it. I would apply that same selectivity to these mnemonics.
Are Mnemonics Better Than Anki?
I do not think they compete with each other because they solve different parts of the memory problem. A mnemonic creates an association that makes information easier to retrieve, while Anki controls when you are prompted to retrieve it again.
The combination is what I like. Put the relationship into a focused card, use a mnemonic when you need a retrieval cue, and allow spaced repetition to gradually make the information automatic.
If you are trying to decide which deck to use, I have a full comparison here: Best MCAT Anki Decks Compared. I would choose one primary system rather than downloading several complete decks and then adding another giant mnemonic deck on top of them.
Are Mnemonics Good for MCAT Psychology and Sociology?
Yes, but I would be particularly careful about overusing them in Psych/Soc. There are so many theories and terms that you can create an acronym for almost everything, and eventually you may spend more effort remembering the acronyms than understanding the psychology.
I would use them for clean sequences such as Piaget, Maslow, OCEAN, or Freud and then rely on practice questions for distinguishing theories that sound similar. If Psych/Soc is one of your weaker sections, I would combine this page with a more complete content resource such as the Khan Academy 86-, 100-, and 300-page Psych/Soc documents or a dedicated deck such as Mr. Pankow.
Are Mnemonics Good for Amino Acids?
They are good for categories and abbreviations, but I would not rely on them instead of learning structures. The AAMC explicitly includes amino-acid configuration, acidic and basic classification, hydrophobic and hydrophilic behavior, sulfur linkages, peptide bonds, protein structure, isoelectric point, and electrophoresis.
That means knowing GAVLIMP or KRH is helpful, but you should still be able to recognize an amino acid from its side chain and predict how changing that residue could affect a protein. My MCAT amino-acid quizzes are designed for exactly that next step.
Are Mnemonics Enough for MCAT Physics?
I would say no. Physics improves much more when you understand proportional relationships, units, equations, and the physical meaning behind them.
Mnemonics such as RED CAT AN OX, CSI, RIP, and Myopia = Minus can prevent easy reversals, but you still have to solve problems. The AAMC Chemical and Physical Foundations outline explicitly combines content knowledge with scientific problem solving and includes mechanics, fluids, circuits, electrochemistry, light, sound, chemistry, thermodynamics, and kinetics.
If physics is giving you trouble, use my free MCAT equation sheet as a reference and then spend much more time applying those relationships in questions than simply memorizing their names.
Frequently Asked Questions About MCAT Mnemonics and Acronyms
What is the best MCAT mnemonic?
I do not think there is one universal best mnemonic, but SNoW DRoP, OIL RIG, RED CAT AN OX, SAME DAVE, OCEAN, and PMAT are some of the ones I think give students a lot of value for very little memorization. They all solve relationships that are easy to reverse and are tied to concepts represented in the AAMC content outline.
The best mnemonic for you is usually the one that fixes something you personally keep missing. If you already know PMAT effortlessly, another hour reviewing it will not help nearly as much as fixing the concept that keeps costing you questions.
What is SNoW DRoP for the MCAT?
SNoW DRoP helps distinguish blotting methods: Southern = DNA, Northern = RNA, Western = Protein. I would use it as the first step and then learn how each technique detects its target and how to interpret an experiment using it.
Biotechnology and nucleic-acid analysis are represented in the AAMC content outline, so this is a mnemonic I think is genuinely useful rather than random trivia.
What is SAME DAVE?
SAME DAVE stands for Sensory Afferent, Motor Efferent; Dorsal Afferent, Ventral Efferent. It helps connect sensory and motor pathways with the dorsal and ventral spinal roots.
I would remember the direction of information flow as well, because afferent information enters the central nervous system while efferent motor information exits toward effectors.
What is OIL RIG?
OIL RIG means Oxidation Is Loss, Reduction Is Gain, referring to electrons. I pair it with RED CAT AN OX, which reminds me that reduction occurs at the cathode and oxidation at the anode.
These relationships apply throughout general chemistry, organic chemistry, biochemistry, and electrochemistry, which is why I think they deserve to become automatic.
What is FLAT PEG?
FLAT PEG is a mnemonic for anterior pituitary hormones: FSH, LH, ACTH, TSH, Prolactin, Endorphins, Growth hormone. Most importantly, the G should remind you of growth hormone, not GHRH.
GHRH is produced by the hypothalamus and stimulates growth hormone release, while GH is secreted by the anterior pituitary.
What is the mnemonic for purines and pyrimidines?
CUT gives you the pyrimidines Cytosine, Uracil, Thymine, while Pure As Gold can remind you that the purines are Adenine and Guanine. DNA and RNA composition are explicitly represented in the AAMC content outline.
I would also remember that DNA normally contains thymine while RNA uses uracil, since that relationship appears naturally in genetics and molecular-biology questions.
What is the mnemonic for stop codons?
The RNA stop codons are UAA, UAG, and UGA. U Are Away, U Are Gone, U Go Away can help attach memorable phrases to each sequence.
I would learn AUG as the major start codon at the same time so initiation and termination information stay connected rather than becoming two separate memorization tasks.
What is the mnemonic for amino acids?
I use several smaller groups rather than one giant phrase. GAVLIMP covers the major nonpolar aliphatic amino acids, FWY identifies the aromatic residues, DE identifies the acidic pair, and KRH identifies the standard basic group.
That approach is more useful to me than trying to force all twenty amino acids into one sentence. You can practice all of the structures and classifications in my free amino-acid quiz.
What is the mnemonic for Maslow’s hierarchy?
Please Stop Buying Stupid Stuff gives you Physiological, Safety, Belonging/Love, Self-esteem, Self-actualization. The phrase is only for the order, so make sure you understand what each category represents.
I would especially practice Psych/Soc through examples because the MCAT is much more likely to describe a person’s behavior and ask you to identify the underlying concept than to ask for the hierarchy as a list.
What is the mnemonic for Piaget’s stages?
Some People Can Fly gives you Sensorimotor, Preoperational, Concrete operational, Formal operational. After memorizing the order, attach the major cognitive milestones to each stage.
That second step is what lets you handle passage questions where the stage name never appears directly.
What is the mnemonic for sleep waves?
I prefer Beta Awake, Alpha Relaxed, Theta N1, Delta Deep. N2 is particularly associated with sleep spindles and K-complexes, while REM has more wake-like EEG activity and is strongly associated with vivid dreaming.
I specifically would not memorize Delta as “dreaming,” which appeared on the older version of this article, because Delta is the signature of deep N3 slow-wave sleep.
Should I make an Anki deck just for MCAT mnemonics?
I would usually add the useful mnemonic to the corresponding content card rather than creating an entirely separate giant deck. That keeps the memory aid connected to the concept you are actually trying to retrieve.
For example, I would add RED CAT AN OX to an electrochemistry card and GAVLIMP to an amino-acid classification card. That makes your existing deck more useful without creating another pile of reviews.
How many MCAT mnemonics should I memorize?
There is no target number. I would memorize the ones that fix recurring retrieval problems and ignore the ones covering information you already know automatically.
Your goal is to reduce mental load, not collect acronyms. A list of thirty-five is a resource library, not an assignment telling you to memorize thirty-five additional things.
Final Thoughts: How I Would Use MCAT Mnemonics if I Were Studying Again
If I were studying for the MCAT again, I would absolutely use mnemonics, but I would use them much more selectively than a giant list like this might initially suggest. I would start with my content review and Anki, identify the facts and sequences I repeatedly confused, and only then attach a mnemonic when it made retrieval easier.
That fits closely with what worked for me during my original preparation. MileDown was the Anki deck I used most because its concise cards allowed me to keep up with active recall while preserving time for practice questions, full-length exams, CARS, and reviewing my mistakes. I also used some JackSparrow because I appreciated having more comprehensive content available, but the longer cards sometimes felt strenuous enough that I did not use the deck as extensively as I originally wanted.
The lesson I took from that experience was not that short is always better or that comprehensive resources are bad. It was that every study tool has to justify the time it takes away from everything else.
I think exactly the same thing about mnemonics. SNoW DRoP is great if it stops you from mixing up blotting techniques. RED CAT AN OX is great if it keeps anode and cathode straight. GAVLIMP is great if it helps you rapidly categorize amino acids. None of those phrases matter, though, if you cannot interpret the experiment, understand the biochemical consequences of an amino-acid substitution, or solve the electrochemistry problem sitting in front of you.
Use these memory tricks to get information into your head more efficiently, and then make the information useful through practice.
I would also be careful about accuracy. One reason I substantially revised this page is that the old version contained several mnemonic errors and oversimplifications that I would not want a student repeatedly drilling into long-term memory. A mnemonic is supposed to make something harder to forget, so the information attached to it needs to be correct.
Keep the official AAMC content outline available when you are deciding what matters, use Anki or another active-recall system to keep important information accessible, and let practice questions show you where your memory is actually failing.
You can access my complete guide to the AAMC MCAT topic list here, my MileDown MCAT Anki guide here, my free amino-acid quizzes here, and the rest of my free MCAT and premed resources here.
The best mnemonic is ultimately not the funniest or cleverest one. It is the one you can recall under pressure, that points you toward correct information, and that gives you enough mental space to focus on the reasoning the MCAT is actually testing.