Question detail
Which option gives the correct cause-and-effect relationship 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. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches DNA and the genome because students must describe DNA as a polymer made of two strands forming a double helix.
- B. Reversed cause: Treating DNA as if it always means one gene. This would blur DNA vs genes instead of testing DNA and the genome.
- C. Missing link: Calling a gene a whole chromosome. This misses the objective focus on describe DNA as a polymer made of two strands forming a double helix.
- D. Different process: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / DNA and the genome.
Answer
The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. 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 Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches DNA and the genome because students must describe DNA as a polymer made of two strands forming a double helix.. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. 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 is the molecule; a gene is a functional section of that molecule. 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 treating dna as if it always means one gene., calling a gene a whole chromosome., or drift away from when asking about dna, test molecular structure, base sequence, nucleotides, or genetic information storage..
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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