DP Biology (first assessment 2025)

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Question EXEX.2.HL.TZ0.3a

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Date Example questions Example questions Marks available [Maximum mark: 2] Reference code EXEX.2.HL.TZ0.3a
Level HL Paper 2 Time zone TZ0
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 2]
EXEX.2.HL.TZ0.3a
(a)

Outline how stem cells develop into specialized cells during development of the embryo.

[2]

Markscheme
  1. (by a process called) cell differentiation;
  2. different genes are expressed/ switched on;
  3. different concentrations of signaling molecules/ molecules determine position of cells in embryo;

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