Question

Explain how the biochemical pathway of photosynthesis recycles many of its own reactions and identify the recycled reactants.

Answer 1

Light reaction use light to synthesize ATP and NADPH₂ . The calvin cycle uses these reactants to produce sugar from CO₂ molecule.

This cycle then produce NAP + ADP + Pi which is used in light reaction with H₂O molecules to produce ATP and NADPH₂ again.