DP Biology (first assessment 2025)

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Question 21M.1A.SL.TZ1.9

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ1.9
Level SL Paper 1A Time zone TZ1
Command term Question number 9 Adapted from N/A
9.
[Maximum mark: 1]
21M.1A.SL.TZ1.9

The hydrolysis of a pure sample of an organic molecule produces a pentose sugar, thymine, guanine and cytosine. What other substances could be expected to be present in the hydrolysed sample?

A. RNA

B. Uracil

C. Phosphate

D. ATP

[1]

Markscheme

C

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