Question

so, what is actually produced during the light reaction? do you know the chemical equation?
a) 2 h₂o + 2 nadp⁺ + nadp + npi + hv produce o₂ + 2 nadph + 2 h⁺ + natp
b) o₂ + 2 nadp⁺ + natp + hv produce 2 h₂o + 2 nadph + 2 h⁺ + nadp + npi
c) 2 h₂o + 2 nadp⁺ + natp + hv produce o₂ + 2 nadph + 2 h⁺ + nadp + npi
d) 2 h₂o + 2 nadph + nadp + npi + hv produce o₂ + 2 nadp⁺ + 2 h⁺ + natp

Explanation:

In the light - reaction of photosynthesis, water ($H_2O$) is split, $NADP^+$ is reduced to $NADPH$, and ATP is synthesized from ADP and Pi using light energy (hv). The correct equation shows water as a reactant, $NADP^+$ as an electron - acceptor, and the production of oxygen ($O_2$), $NADPH$, protons ($H^+$) and ATP.

Answer:

a) $2H_2O + 2NADP^+ + nADP + nPi+hv
ightarrow O_2 + 2NADPH + 2H^+ + nATP$