DP Biology (first assessment 2025)

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Question 22N.1A.SL.TZ0.6

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1A.SL.TZ0.6
Level SL Paper 1A Time zone TZ0
Command term Question number 6 Adapted from N/A
6.
[Maximum mark: 1]
22N.1A.SL.TZ0.6

What is the arrangement of subunits in a DNA nucleotide?

A.  sugar – base – phosphate

B.  sugar – phosphate – base

C.  phosphate – sugar – base

D.  sugar – phosphate – base – base – phosphate – sugar

[1]

Markscheme

C

Examiners report

This question required the students to identify the arrangement of the subunits of a DNA nucleotide. This question discriminated well and was statistically the second-best performing question on the paper.

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