Question detail

Which option avoids the common misconception in this objective for Reproduction, DNA structure (biology only): students must describe (HT only) how complementary bases pair, with C linked to G and T linked to A.

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At a glance

MCQ

Type

practice

Style

Topic

Reproduction

Question

A. Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches DNA structure (biology only) because students must describe (HT only) how complementary bases pair, with C linked to G and T linked to A.
B. Common misconception: Explaining protein coding without naming the gene as the relevant section of DNA. This would blur DNA vs genes instead of testing DNA structure (biology only).
C. Partial misconception: Treating DNA as if it always means one gene. This misses the objective focus on describe (HT only) how complementary bases pair, with C linked to G and T linked to A.
D. Terminology mix-up: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / DNA structure (biology only).

Answer

Explanation

The correct option is Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches DNA structure (biology only) because students must describe (HT only) how complementary bases pair, with C linked to G and T linked to A.. Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches DNA structure (biology only) because students must describe (HT only) how complementary bases pair, with C linked to G and T linked to A. is correct because A DNA base sequence is the storage format; a gene is the named instruction unit. The learning objective says students must describe (HT only) how complementary bases pair, with C linked to G and T linked to A, so the answer must stay inside DNA structure (biology only). The alternative options are wrong because they either explaining protein coding without naming the gene as the relevant section of dna., treating dna as if it always means one gene., or drift away from do not use dna, gene, and chromosome as interchangeable answers..

Common mistake

Misidentifying base‑pairing rules

Students often state that A pairs with C and G pairs with T, confusing the complementary base‑pairing scheme.

Remind them that adenine (A) always pairs with thymine (T) and cytosine (C) always pairs with guanine (G); the A–T and C–G pairs are the only correct complementary pairings in DNA.

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