Multiple choice

With reference to photosynthesis, in chloroplasts, consider the following statements:

  1. The reactions that break down water and produce oxygen are located on the lumen side of the thylakoid membrane, in granum areas.
  2. The molecules of ferredoxin-NADP reductase that generate NADPH are located on the side of the membrane facing stroma. Which of the statements given above is/are correct ?

  1. 1 only

  2. 2 only

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Water-splitting and oxygen evolution occur on lumen side of thylakoid membrane within PSII complexes located in granal stacks. Ferredoxin-NADP reductase (producing NADPH) is bound to stroma-facing side of thylakoid membrane. Both statements correctly describe spatial organization.

Keep practicing — related questions