DP Biology (first assessment 2025)

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Question 22M.1A.HL.TZ2.5

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.HL.TZ2.5
Level HL Paper 1A Time zone TZ2
Command term Question number 5 Adapted from N/A
5.
[Maximum mark: 1]
22M.1A.HL.TZ2.5

Cisplatin is an anti-cancer drug that prevents tumour cells from dividing by mitosis as it inhibits cell processes at stage S of interphase. How does cisplatin prevent cancer cells from dividing?

A. It inhibits the replication of DNA.

B. It inhibits the growth of the spindle fibres.

C. It prevents the breakdown of the nuclear membrane.

D. It prevents the condensation of chromosomes.

[1]

Markscheme

A

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