Photophosphorylation means:

Correct answer: A. Formation of ATP from ADP in presence of light

  • A. Formation of ATP from ADP in presence of light
  • B. Formation of NADP
  • C. Formation of ADP from ATP
  • D. Formation of PGA

Explanation

Photophosphorylation is the process by which ATP is synthesized from ADP and inorganic phosphate using the energy of sunlight, which is captured during the light-dependent reactions of photosynthesis. This occurs in the thylakoid membranes of chloroplasts and is a crucial step in converting light energy into chemical energy.Option A is correct, as it accurately describes the formation of ATP in the presence of light. Option B is incorrect because NADP is a coenzyme that gets reduced to NADPH, not formed in this step. Option C is incorrect, as it describes the dephosphorylation of ATP, which is not what photophosphorylation entails. Option D is incorrect because the PGA formation is part of the Calvin cycle, not the light-dependent reactions.

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