Question detail
Which option best identifies the exact concept boundary for Reproduction, DNA and the genome: students must describe DNA as a polymer made of two strands forming a double helix.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reproduction
Question
- A. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must describe DNA as a polymer made of two strands forming a double helix.
- B. Scale confusion: Calling a gene a whole chromosome. This would blur DNA vs genes instead of testing DNA and the genome.
- C. Process confusion: Explaining protein coding without naming the gene as the relevant section of DNA. This misses the objective focus on describe DNA as a polymer made of two strands forming a double helix.
- D. Evidence confusion: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / DNA and the genome.
Answer
The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must describe DNA as a polymer made of two strands forming a double helix.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in DNA and the genome.
Explanation
The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must describe DNA as a polymer made of two strands forming a double helix.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must describe DNA as a polymer made of two strands forming a double helix. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must describe DNA as a polymer made of two strands forming a double helix, so the answer must stay inside DNA and the genome. The alternative options are wrong because they either calling a gene a whole chromosome., explaining protein coding without naming the gene as the relevant section of dna., or drift away from when asking about genes, test a section of dna, protein coding, alleles, or inherited characteristics..
Common mistake
Misunderstanding DNA Structure
Students often describe DNA as a single strand instead of recognizing it as a double helix.
Emphasize that DNA consists of two strands that twist around each other, forming a double helix.
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