DP Biology (first assessment 2025)

Test builder »

Question 22M.1A.SL.TZ2.6

Select a Test
Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.6
Level SL Paper 1A Time zone TZ2
Command term Question number 6 Adapted from N/A
6.
[Maximum mark: 1]
22M.1A.SL.TZ2.6

The diagram shows the structure of the protein CXCL12.

[Source: Lu, J., Chatterjee, M., Schmid, H. et al. CXCL14 as an emerging immune and inflammatory modulator.
J Inflamm 13, 1 (2016). https://doi.org/10.1186/s12950-015-0109-9 Distributed under the terms of the
Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).]

 

Which chemical group is found at X?

A. NH2

B. NOH

C. COH

D. COOH

[1]

Markscheme

D

Syllabus sections