Question

Which of the following about Calvin cycle is correct?

(a) It is a metabolic pathway by which plants convert CO2 into pentose sugars as the main product

(b) With decrease in light intensity, the enzymes are more reactive

(c) Rubisco adds CO2 to 3-phosphoglycerate

(d) It is a metabolic pathway by which plants convert CO2 and water into carbohydrates

I have been asked this question in an internship interview.

This interesting question is from General Features of Photophosphorylation topic in section Oxidative Phosphorylation and Photophosphorylation of Biochemistry

Answer 1

Right option is (d) It is a metabolic pathway by which plants convert CO2 and water into carbohydrates

The explanation: CO2 combines with ribulose 1, 5-bisphosphate.

The enzymes are more reactive if there is an increase in light intensity.