O-Level Biotechnology Practice Questions - Singapore-Cambridge GCE Ordinary Level Biotechnology (Syllabus NP04) Exam

What is the primary function of DNA helicase during DNA replication?

Unwinding the double helix by breaking hydrogen bonds between base pairs Synthesizing new complementary DNA strands in the 5' to 3' direction Joining Okazaki fragments on the lagging strand with phosphodiester bonds Synthesizing short RNA primers required for initiation

Correct Answer:

Unwinding the double helix by breaking hydrogen bonds between base pairs

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