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MCAT Biological and Biochemical Foundations of Living Systems Flashcards: 1b Genetic Code Codon Translation

Study 1b Genetic Code Codon Translation in MCAT Biological and Biochemical Foundations of Living Systems with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Which three codons are stop codons in the standard genetic code?

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ANSWER

UAA, UAG, UGA. These codons signal translation termination by lacking corresponding tRNAs and recruiting release factors to disassemble the ribosomal complex.

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MCAT Biological and Biochemical Foundations of Living Systems: Foundational Concept 1: Biomolecules and Metabolism

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What this deck covers

This deck focuses on 1b Genetic Code Codon Translation, giving you a quick way to review the definitions, rules, and examples that matter most for MCAT Biological and Biochemical Foundations of Living Systems.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 34Practice questions for this set
In a bacterial expression study, a single-base substitution changed codon 12 in an enzyme mRNA from 5'-GAA-3' to 5'-GAG-3'. Protein yield and enzymatic activity were unchanged across replicates. A lab note lists the relevant code: GAA → Glu, GAG → Glu. Based on the information, which conclusion is most consistent with codon redundancy during translation?
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