Molecular complexes in the cristae contain electron transport carriers that move into the intermembrane space. The first electron transport carrier accepts an from . A second carrier accepts an from . After the have travelled through the chain they are finally accepted by and 2 to produce water. Going from high to low concentration, flow through ATP synthase like a water wheel to produce ~32 molecules.

a.) Hydrogen

b.) electron

c.) NADH⁺ + H⁺

d.) electron

e.) FADH₂

f.) electron

g.) hydrogen ions

h.) oxygen

i.) hydrogen ions

j.) ATP

Explanation:

Molecular complexes in the cristae contain electron transport carriers that move Hydrogen into the intermembrane space.

The first electron transport carrier accepts an electron from NADH⁺ + H⁺

A second carrier accepts an electron from FADH₂ .

After the electron have travelled through the chain they are finally accepted by hydrogen ions and oxygen to produce water.

Going from high to low concentration, hydrogen ions flow through ATP synthase like a water wheel to produce ~32 ATP molecules.