DP Biology (first assessment 2025)

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Question SPM.1A.HL.TZ0.6

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.6
Level HL Paper 1A Time zone TZ0
Command term Question number 6 Adapted from N/A
6.
[Maximum mark: 1]
SPM.1A.HL.TZ0.6

The diagram shows the structure of insulin.


From the diagram, what can be concluded about the structure of insulin?


A.  It is composed of two polypeptide chains stabilized by disulfide bonds.

B.  It is a simple protein composed of one continuous polypeptide chain.

C.  It is a fibrous protein.

D.  Its molecules do not display quaternary structure.

[1]

Markscheme

A

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