MCAT Biological and Biochemical Foundations of Living Systems Flashcards: 1b Nucleic Acid Structure Base Pairing

Study 1b Nucleic Acid Structure Base Pairing 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

If double-stranded DNA is $40\%$ guanine, what percentage is cytosine?

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ANSWER

$40\%$ . In double-stranded DNA, guanine pairs equally with cytosine, so their percentages match due to base pairing rules.

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What this deck covers

This deck focuses on 1b Nucleic Acid Structure Base Pairing, 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 50Practice questions for this set

A 16-bp DNA hairpin is engineered with a 6-bp stem and a 4-nt loop. In one variant, two A–T base pairs in the stem are replaced with two G–C base pairs while keeping the stem length constant and maintaining perfect complementarity. Under identical buffer conditions, what effect would this mutation most likely have on the hairpin's stem stability?

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