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MCAT Biochemistry Bundle: Amino Acid Summary Sheet + 25 High-Yield Practice Questions (Top Scorer)

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Master the MCAT Biochemistry section with this comprehensive All-in-One Study Bundle. This package combines my highly-rated, visual summary sheet with a set of 25 rigorous, high-yield practice questions and detailed answer keys designed to mimic the complexity of the AAMC exam. Active Recall: Use the Summary Sheet for your initial content review, then immediately test your retention with the Practice Question Set. Deep-Dive Answers: My answer keys don't just give you the letter; they explain the why behind every concept, including thermodynamic principles, pKa shifts, and peptide structure logi High-Yield Focus: I’ve stripped away the unnecessary textbook fluff to focus only on the topics that frequently appear on test day, helping you maximize your study time.

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MCAT Biochemistry Master Study Guide

, MCAT Biochem: Amino Acids & Proteins
Must knows
● For each amino acid, you MUST know the structure, classification (e.g. nonpolar), pka values of
R groups, and 3 letter/1 letter abbreviation
● Proteins in the human body use L-amino acids (all S configuration, except cysteine); at
physiological pH, carboxylic acids are deprotonated and amino groups are protonated.

Nonpolar, Nonaromatic Amino Acids
● These are hydrophobic and typically found in the interior of proteins
● Mnemonic: "Grandma Always Visits Lisbon In March For William’s Party”

Glycine (Gly, G) Alanine (Ala, A) Valine (Val, V)




smallest AA, achiral, nitrogen metabolism branched chain AA
flexible

Leucine (Leu, L) Isoleucine (Ile, I) Methionine (Met, M)




branched chain AA branched chain AA sulfur containing, encoded by AUG

Phenylalanine (Phe, F) Tryptophan (Trp, W) Proline (Pro, P)




absorbs UV, aromatic absorbs UV, aromatic, indole secondary amine, helix breaker

Acidic Amino Acids

Aspartic Acid (Asp, D) Glutamic Acid (Glu, E)




hydrophilic, pKa = 4 hydrophilic, pKa = 4

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