That would be the proton. The number of protons in the nucleus determine which element it is and its properties.
Answer:
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 catalyze conversion of ADP to ATP.
Primary consumer just remember the “primary” (first) consumer so the one that eats a heterotroph
