DP Biology (first assessment 2025)

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Question 22M.1A.HL.TZ1.2

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.HL.TZ1.2
Level HL Paper 1A Time zone TZ1
Command term Question number 2 Adapted from N/A
2.
[Maximum mark: 1]
22M.1A.HL.TZ1.2

More than 90 % of cellular cholesterol is located in the cell’s plasma membrane. What is the main role of cholesterol in the plasma membranes of mammalian cells?

A. To regulate membrane fluidity

B. To increase membrane solubility

C. To increase membrane permeability

D. To regulate membrane temperature

[1]

Markscheme

A

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