Biology Bioenergetics NUMS 2022
PMDC Verified Question 53 of 67
What are the products of light dependent reactions of photosynthesis?
A
ATP, RuBP and reduced NAD
B
ATP, oxygen and reduced NADP
C
GP, oxygen and reduced NAD
D
GP, reduced NADP and RuBP
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: ATP, oxygen and reduced NADP
Concept:

The light-dependent reactions convert solar energy into chemical energy, providing the necessary assimilatory power for the dark reactions.

Solution:

  • ATP is generated via photophosphorylation.
  • Reduced NADP (NADPH) is generated when electrons from PSI reduce \( NADP^+ \).
  • Oxygen (\( O_2 \)) is released as a byproduct from the photolysis of water.


Why other options are incorrect:

  • RuBP and GP (glycerate 3-phosphate) are components/products of the light-independent reactions (Calvin cycle).
  • Reduced NAD (NADH) is produced in cellular respiration, not photosynthesis.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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