Which enzyme is responsible for adding complementary nucleotides to the growing DNA strand during replication?

A DNA ligase

B Helicase

C Primase

D DNA polymerase

✓ Correct Answer: Option D

DNA polymerase is the enzyme that synthesizes new DNA strands by adding nucleotides, one by one, that are complementary to the template strand during replication.

💡 Why is D) the correct answer?

The correct answer to the question "Which enzyme is responsible for adding complementary nucleotides to the growing DNA strand during replication?" is Option D: DNA polymerase.

The other options — A) DNA ligase, B) Helicase, C) Primase — are incorrect for this IB Exam Prep question. As explained above: DNA polymerase is the enzyme that synthesizes new DNA strands by adding nucleotides, one by one, that are complementary to the template strand during replication.

📚 About This IB Exam Prep Practice Question

This 3-level IB Exam Prep question from the Biology topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free IB Exam Prep practice test or use flashcards for spaced repetition review.

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Which enzyme is responsible for adding complementary nucleotides to the growing DNA strand during replication?

✓ Correct Answer: Option D

📚 About This IB Exam Prep Practice Question

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