Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

(A)membrane potential
(B)accumulation of Na ions
(C)accumulation of K ions
(D)proton gradient

The NCERT line that answers it

Verbatim line

Unlike photophosphorylation where it is the light energy that is utilised for the production of proton gradient required for phosphorylation, in respiration it is the energy of oxidation-reduction utilised for the same process.

Chapter: Respiration in Plants
Section: 12.4.2 Electron Transport System (ETS) and Oxidative Phosphorylation
Page: 7
Words matched: 33 of 33

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=0.8039, combined=0.8823). Verified: high — The span explicitly states that photophosphorylation produces a 'proton gradient required for phosphorylation,' directly matching the chemiosmotic theory's basis on proton gradient.

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