In chemiosmosis, what is the most direct source of energy that is used to convert ADP + ᵢ to ATP?
A) energy released as electrons flow through the electron transport chain
B) energy released from substrate-level phosphorylation
C) energy released from movement of protons through ATP synthase, down their electrochemical gradient
D) energy released as electrons are transported across the inner mitochondrial membrane

Question

In chemiosmosis, what is the most direct source of energy that is used to convert ADP +  ᵢ to ATP?
A) energy released as electrons flow through the electron transport chain 
B) energy released from substrate-level phosphorylation 
C) energy released from movement of protons through ATP synthase, down their electrochemical gradient 
D) energy released as electrons are transported across the inner mitochondrial membrane

Quizplus · Accepted Answer

The energy used to convert ADP + Pi to ATP comes from the movement of protons (H+) through ATP synthase, down their electrochemical gradient. This process is called chemiosmosis, and it is driven directly by the proton motive force created by the electron transport chain.

In Chemiosmosis, What Is the Most Direct Source of Energy