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MDCAT Biology QUESTION #11425
Question 1
What are the products of light-dependent reactions of photosynthesis?
  • $ATP$, $RuBP$ and reduced $NAD$
  • $O_2$, reduced $NADP$ and $ATP$✔️
  • $O_2$, oxygen and not reduced $NAD$
  • Reduced $NADP$ and $RuBP$
Correct Answer Explanation
The products of the light-dependent reactions (occurring in thylakoid membranes) are: $ATP$ (via photophosphorylation), NADPH (reduced $NADP^+$, via NADP reductase), and $O_2$ (released from water splitting/photolysis). These products power the Calvin cycle in the stroma.