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Question 17N.1.SL.TZ0.25

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.1.SL.TZ0.25
Level SL Paper 1 Time zone TZ0
Command term Deduce Question number 25 Adapted from N/A
25.
[Maximum mark: 1]
17N.1.SL.TZ0.25

The diagram shows red blood cells and undifferentiated tissue cells.

[Source: © International Baccalaureate Organization 2017]

Diffusion of oxygen from blood cells to tissue cells is represented by arrow 3 in the diagram.
What molecules are shown diffusing by arrow 1 and arrow 2?

[1]

Markscheme

C

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