CAIE IGCSE Biology 12.1.2 Effect of Temperature on Respiration Questions

Practise investigating how temperature changes respiration rate in yeast and seeds using gas-volume data, graphs and respirometers.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • interpret respirometer bubble movement or ethanol-concentration trends as evidence of respiration rate
  • predict that respiration rate rises towards an optimum temperature and falls above it as enzymes denature
  • explain low-temperature results using low kinetic energy and fewer effective collisions

CAIE IGCSE Biology 12.1.2 Effect of Temperature on Respiration Questions question 1

[Maximum number: 1]

What is the effect on germinating seeds of increasing the temperature from 10∘C10^{\circ} \mathrm{C} to 20∘C20^{\circ} \mathrm{C} ?

A

a decrease in the production of oxygen

B

a decrease in the respiration rate

C

an increase in the respiration rate

D

an increase in the transpiration rate

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