In a hydrogen lon pump, the energy is used to join small molecules together
to make larger ones, which factor most likely has the greatest effect on the
number of molecules mitochondria can produce?
o
a. the amount of energy the flowing hions have
o
b, the size of the cell nucleus
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c. the shape of the protein channel
d. the size of the membrane proteins

The size of the membrane proteins is a factor that has the greatest effect on the  number of molecules.  

Explanation:

ATPs are formed by mitochondria in Oxidative Phosphorylation. The transport chain of electrons is composed of four protein complexes that helps in passing the H+ ions from the membrane of mitochondria.

The large molecules of hydrogen are pumped by the first complex that activates the activity of protein to pass four large molecules through the inner membrane. The number of molecules of ATP produced by mitochondria is related to the proton numbers that has been pumped.

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