NEETBotanyRespiration in Plants
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In cellular respiration, the mechanism of ATP synthesis is called photophosphorylation. Reason (R): The energy of oxidation-reduction is utilized for the production of a proton gradient required for phosphorylation. In the light of the above statements, choose the correct answer from the options gi
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
D. (A) is false but (R) is true
Step-by-step solution
In cellular respiration, the mechanism of ATP synthesis is called oxidative phosphorylation, not photophosphorylation (which occurs during photosynthesis using light energy). Therefore, Assertion (A) is false. According to the chemiosmotic hypothesis, in respiration, it is the energy of oxidation-reduction that is utilized for the production of a proton gradient required for phosphorylation. It is for this reason that the process is called oxidative phosphorylation. Therefore, Reason (R) is true. Answer: (A) is fal