Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

In C3 plants, what condition favors photorespiration over photosynthesis?
Options
A Cold temperatures
B Abundant water supply
C High oxygen and low carbon dioxide concentration
Correct Answer
D Low light intensity
Correct Answer

Option C is the correct answer.

Detailed Explanation

High concentrations of oxygen and low concentrations of carbon dioxide increase the likelihood that RuBisCO will bind O2 instead of CO2, initiating photorespiration.

Hint

Think about what molecules RuBisCO can bind.

Question Info