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Date May 2019 Marks available 1 Reference code 19M.1.HL.TZ1.39
Level Higher level Paper Paper 1 Time zone Time zone 1
Command term Identify Question number 39 Adapted from N/A

Question

The image shows a transverse section through a collecting duct in a vertebrate kidney.

[Source: Professor Peter Takizawa, Yale University]

How is the movement of materials across the wall of the collecting duct affected by the release of ADH from the pituitary gland?

A. There is increased movement of water in the direction of arrow I.

B. There is increased movement of sodium in the direction of arrow I.

C. There is increased movement of water in the direction of arrow II.

D. There is increased movement of sodium in the direction of arrow II.

Markscheme

A

Examiners report

[N/A]

Syllabus sections

Additional higher level » Topic 11: Animal physiology » 11.3 The kidney and osmoregulation
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Additional higher level » Topic 11: Animal physiology
Additional higher level

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