Free Structure of DNA MCQs with Answers
11 Structure of DNA MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
11 questions · page 2 of 2
11. The complementary base pairing in DNA is important because it:
- A. Maintains the tertiary structure of enzymes
- B. Provides energy for all cell metabolism
- C. Enables protein to fold properly
- D. Allows DNA act as a genetic blueprint during replication
Explanation: Because adenine always pairs with thymine and guanine with cytosine, each strand specifies the sequence of the other, so separating the two gives two templates that produce identical copies. This is precisely what Watson and Crick noted on proposing the structure. Protein folding and enzyme structure depend on interactions between amino acid side chains, not on base pairing.
Correct answer: Allows DNA act as a genetic blueprint during replication