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NEET2026BiologyChapterActual

Identify the correct statements regarding the light reaction of photosynthesis : (a) The stroma lamellae membranes lack PS II as well as NADP reductase enzyme. (b) The reaction centre of Photosystem II has an absorption peak at 700 nm. (c) The CF₁ part of ATP synthase is embedded in the thylakoid membrane and forms a transmembrane channel. (d) Cyclic photophosphorylation results in the synthesis of ATP, but not of NA

Options

  1. A(a), (b) and (d)
  2. B(a), (d) and (e)
  3. C(b), (c) and (e)
  4. D(c), (d) and (e)

Correct answer

B. (a), (d) and (e)

Step-by-step solution

Statement (a) is correct because stroma lamellae membranes possess only PS I and lack PS II and NADP reductase enzyme. Statement (b) is incorrect because the reaction centre of Photosystem II (PS II) has an absorption peak at 680 nm, while Photosystem I (PS I) has an absorption peak at 700 nm. Statement (c) is incorrect because the CF₀ part of ATP synthase is embedded in the thylakoid membrane and forms a transmembrane channel, whereas the CF₁ part protrudes on the outer surface of the thylakoid membrane. Statement

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