DP Biology (first assessment 2025)

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Question 22N.2.SL.TZ0.5a

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.2.SL.TZ0.5a
Level SL Paper 2 Time zone TZ0
Command term Identify Question number a Adapted from N/A
a.
[Maximum mark: 1]
22N.2.SL.TZ0.5a
(a)

Identify the structure labelled X.

[1]

Markscheme

(Neurotransmitter) vesicle;

Do not accept Vacuole.

Examiners report

The majority managed to label X as a vesicle in (a). In (b) weaker candidates tried to explain the propagation of the action potential, rather than the release of the neurotransmitter. Better candidates were able to give almost textbook answers to explain the actions of the pesticide. Many got tangled up trying to explain, with those who had never seen this part of the syllabus, just saying that pesticides kill insects.

Syllabus sections