DP Biology (first assessment 2025)

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Question 23M.2.HL.TZ1.2c

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.HL.TZ1.2c
Level HL Paper 2 Time zone TZ1
Command term Discuss Question number c Adapted from N/A
c.
[Maximum mark: 2]
23M.2.HL.TZ1.2c
(c)

Discuss briefly whether amino acids on the surface of the protein are likely to be polar or non-polar.

[2]

Markscheme

polar/hydrophilic where exposed to the cytoplasm/to fluid outside cell/to polar phospholipid heads;
non-polar/hydrophobic where exposed to the (core of the) membrane/hydrophobic tails (of phospholipids);

Syllabus sections