DP Biology (first assessment 2025)

Question 21M.1A.HL.TZ1.7

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.1A.HL.TZ1.7
Level	HL	Paper	1A	Time zone	TZ1
Command term		Question number	7	Adapted from	N/A

[Maximum mark: 1]

21M.1A.HL.TZ1.7

A tissue sample was examined under the microscope in order to determine a mitotic index. The number of cells in each stage of the cell cycle was determined and the data were entered into a table.

What is the mitotic index?

A. 0.125

B. 0.25

C. 0.75

D. 1.00

[1]

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D. Continuity and Change » D2.1 Cell and nuclear division » D2.1.17. Differences between tumours in rates of cell division and growth and in the capacity for metastasis and invasion of neighbouring tissue

Question 21M.1A.HL.TZ1.7

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