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The model represents a molecule found inside human cells - OCR Gateway - GCSE Biology (Combined Science) - Question 4 - 2021 - Paper 1
Question 4
The model represents a molecule found inside human cells. Which term describes this molecule? A B C D Your answer
Worked Solution & Example Answer:The model represents a molecule found inside human cells - OCR Gateway - GCSE Biology (Combined Science) - Question 4 - 2021 - Paper 1
Step 1
Which term describes this molecule?
Answer
The molecule represented in the model is a DNA molecule, which is known for its double helix structure. Therefore, amongst the options provided:
- Option A (Double helix-shaped monomer) describes a single unit of DNA, which does not represent the entire structure.
- Option C (Triple helix-shaped monomer) refers to a different structure that is not typical for DNA.
- Option D (Triple helix-shaped polymer) also does not accurately describe DNA, as it is not a triple helix.
The correct answer must be option B: Double helix-shaped polymer, as DNA is a polymer composed of many nucleotides arranged in a double helix.