Multiple choice

Photorespiration is favoured by

  1. low O2 and high CO2

  2. low light and high O2

  3. high O2 and low CO2

  4. low temperature and high CO2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photorespiration occurs when the enzyme RuBisCO binds with oxygen instead of carbon dioxide. This process is favored under conditions of high oxygen concentration and low carbon dioxide concentration, often occurring in hot, dry environments.

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