DP Biology (first assessment 2025)

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Question 19N.1A.SL.TZ0.26

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.1A.SL.TZ0.26
Level SL Paper 1A Time zone TZ0
Command term Identify Question number 26 Adapted from N/A
26.
[Maximum mark: 1]
19N.1A.SL.TZ0.26

What is a function of DNA polymerase I?

A. Adds nucleotides in a 5’ to 3’ direction to elongate the chain

B. Uncoils the DNA double helix and splits it into two template strands

C. Removes RNA primer and replaces it with DNA

D. Produces sugar-phosphate bonds to link Okazaki fragments

[1]

Markscheme

C

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