Question

Warburg effect is decrease in the rate of photosynthesis at

• A. Low carbon dioxide concentration
• B. High oxygen content
• C. High carbon dioxide concentration
• D. Both A and B

Answer 1

The correct option is B High oxygen content

Warburg effect states that if the concentration of oxygen increases the RuBisCO gets affinity for it and a process which is a waste of energy carried out known as photorespiration. This is observed in C${}_3$ plants in which glycolate acts as a substrate and reduce the rate of photosynthesis.

So the correct option is 'High oxygen content'.