Question

(multi-select answer)

ATP Synthesis -

A) powered by ATP

B) 2 active sites

C) integral membrane proteins

D) oxidative phosphorylation

Answer 1

Ans. Correct options- C, D. ATP synthesis is carried out by ATP synthase- an integral membrane protein embedded in the inner mitochondrial membrane. The formation of ATP synthesis by ATP synthase during cellular respiration is called oxidative phosphorylation.

# Option A. Incorrect. ATP synthesis is NOT powered by ATP, but it produces ATP. It is powered by proton gradient in mitochondria or by release of redox potential energy during substrate level phosphorylation.

# Option B. Incorrect. An active site is the part of enzyme where the reaction is physically catalysed. ATP synthase has two domains Fo and F1. Only the F1 region has 3 active sites for ATP synthesis.