DP Biology (first assessment 2025)

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Question 22M.1A.SL.TZ2.11

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.11
Level SL Paper 1A Time zone TZ2
Command term Question number 11 Adapted from N/A
11.
[Maximum mark: 1]
22M.1A.SL.TZ2.11

What is a function of the enzyme helicase?

A. It coils DNA up into a double helical shape.

B. It links DNA nucleotides in a new DNA strand.

C. It breaks hydrogen bonds between the DNA strands.

D. It forms temporary hydrogen bonds to produce messenger RNA.

[1]

Markscheme

C

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