Question

Which particles flow through ATP synthase, causing it to produce ATP?

OA. Protons (H+ ions)
OB. Electrons (e¯)
O C. Phosphate (P) groups
D. Potassium atoms (K)

Answer 1

Protons : Protons (H+ ions).

ATP synthase uses the protons flowing into the matrix to bind ADP and Pi and release ATP.

Step-by-step explanation:

The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP.
Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyse conversion of ADP to ATP.