Question

Chemiosmotic hypothesis does not involve ____________

(a) Only proton transport is strictly regulated, other positively charged ions can diffuse freely across the mitochondrial membrane

(b) ATPase activity is reversible

(c) Proton flow into the mitochondria depends on the presence of ADP and Pi

(d) Electron transport by the respiratory chain pumps protons out of the mitochondria

I have been asked this question in a national level competition.

My question is based upon ATP Synthesis-1 topic in chapter Oxidative Phosphorylation and Photophosphorylation of Biochemistry

Answer 1

Correct choice is (a) Only proton transport is strictly regulated, other positively charged ions can diffuse freely across the mitochondrial membrane

Best explanation: Not only proton transport but there is electron transport also.