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CAIE A-Level Biology AS 8.2.2 Chloride Shift and Its Importance Questions

Explain the chloride shift and its importance in carbon dioxide transport using evidence from each question and mark scheme.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • Explain the chloride shift and its importance in carbon dioxide transport.

CAIE A-Level Biology AS 8.2.2 Chloride Shift and Its Importance Questions question 1

[Maximum number: 1]

What happens when carbon dioxide is transported by red blood cells?

A

Hydrogencarbonate ions move into the red blood cells and chloride ions move into the plasma.

B

Chloride ions move into the red blood cells and bind to haemoglobin.

C

Chloride ions move into the red blood cells and hydrogen ions move into the plasma.

D

Chloride ions move into the red blood cells and hydrogencarbonate ions move into the plasma.

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