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Question 18M.3.SL.TZ2.a

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Date May 2018 Marks available [Maximum mark: 3] Reference code 18M.3.SL.TZ2.a
Level SL Paper 3 Time zone TZ2
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 3]
18M.3.SL.TZ2.a

Explain the relationship between infection by the bacterium Vibrio cholerae and dehydration.

[3]

Markscheme

a. V. cholerae releases toxin 

b. chloride channels activated 

c. chloride ions are pumped out of cells 

d. leading to fluid loss from intestine/diarrhea 

e. associated vomiting contributes to dehydration

Examiners report

 

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