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Date May 2017 Marks available 3 Reference code 17M.3.HL.TZ2.20
Level Higher level Paper Paper 3 Time zone Time zone 2
Command term Outline Question number 20 Adapted from N/A

Question

Outline how infection by Vibrio cholerae can lead to dehydration.

Markscheme

a. V. cholerae produces toxin 

b. «toxin» causes ions to be pumped into «small» intestine 

c. drawing water into the intestine 

d. through osmosis 

e. leading to water loss through diarrhea/vomiting
OR
leading to dehydration

Examiners report

[N/A]

Syllabus sections

Option D: Human physiology » Option D: Human physiology (Core topics) » D.2 Digestion
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