Question

Which of the following method is responsible for ATP production by green plant cells in the presence of sunlight?

• A. By phosphorylation only
• B. By oxidative phosphorylation only
• C. By only substrate level phosphorylation
• D. All of the above

Answer 1

The correct option is B By oxidative phosphorylation only

Photophophorylation refers to synthesis of ATP from ADP and Pi in presence of Sunlight and occurs in chloroplast wherein photosynthetic pigments absorb the sunlight. Oxidative phosphorylation refers to synthesis of ATP by ADP and Pi driven by energy released from oxidation of reducing powers NADH and FAD by transfer of their electrons to oxygen. It occurs in inner mitochondrial membrane. substrate level phosphorylation refers to formation of ATP coupled by direct transfer of phosphste group to ADP. Correct answer is B.