DP Biology (first assessment 2025)

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Question 22N.1A.SL.TZ0.2

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

The diagram refers to questions 2 and 3. It shows a heterotrophic, unicellular, freshwater organism that has been placed in distilled water. The short arrows show movement of water and the long arrows show a sequence of steps.

What life function is illustrated?

A.  Nutrition

B.  Homeostasis

C.  Endocytosis

D.  Response

[1]

Markscheme

B

Examiners report

Both these questions 2 and 3 referred to a diagram of a unicellular organism that had been placed in distilled water. Question 2 asked the candidates to identify the life function illustrated and more than 50 % of the candidates correctly identified the process as homeostasis.

Syllabus sections