DP Biology (last assessment 2024)

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Question 21M.1.SL.TZ1.15

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1.SL.TZ1.15
Level SL Paper 1 Time zone TZ1
Command term Question number 15 Adapted from N/A
15.
[Maximum mark: 1]
21M.1.SL.TZ1.15

Which enzyme is matched to its function?

[1]

Markscheme

B

Examiners report

This question was partly based on an Application in 3.5 (Genetic modification and biotechnology) relating to gene transfer in bacteria using restriction endonucleases and DNA ligase. It was also based on an understanding of DNA replication from 2.7 (DNA replication, transcription and translation). About half of candidates answered the question correctly, but a moderate discrimination index shows that some otherwise well-prepared candidates did not realise that DNA polymerase makes covalent bonds between nucleotides.

Syllabus sections