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Which statement describes DNA? A - OCR Gateway - GCSE Biology - Question 7 - 2021 - Paper 1
Question 7
Which statement describes DNA? A. A monomer of one strand that forms a single helix. B. A monomer of two strands that form a double helix. C. A polymer of two str... show full transcript
Worked Solution & Example Answer:Which statement describes DNA? A - OCR Gateway - GCSE Biology - Question 7 - 2021 - Paper 1
Step 1
C. A polymer of two strands that form a double helix.
Answer
This statement accurately describes DNA. DNA, or deoxyribonucleic acid, consists of two long strands that coil around each other to form a structure known as a double helix. Each strand is a polymer made up of nucleotides, which are the monomer units of DNA. The two strands run in opposite directions and are held together by hydrogen bonds between complementary base pairs.