Question

In photosynthesis light energy is utilized in

• A. Converting ATP into ADP
• B. Changing CO${}_2$ into carbohydrate
• C. Converting ADP into ATP
• D. All of the above

Answer 1

Answer: (C)

Converting ADP into ATP

Photosynthesis is a process in which phosphorylation occurs. Phosphorylation is a process in which phosphate group is added, and in the case of photosynthesis it happens in the presence of light, thus called as 'photophosphorylation'. ADP is converted to ATP, the energy currency as the main product of this process. In photosynthesis, cyclic and non-cyclic photophosphorylation takes place in the light phase and generate ATP and NADPH.

So, the correct answer is option C.