Electron transport chain and carrier molecules

Question

As electrons are passed down the chain, the electron carrier molecules ____.

a. Phosphorylate ADP into ATP

b. Pump protons/H+ into the space between the mitochondria’s two membranes

c. Have their heme groups removed, which then attach to and oxidize NADH and

FADH2

d. Work to catalyze a reaction between protons and ATP synthase

Answer 1

The second choice. Since they drop off the electrons to the ETC, and soon creates the H+ Gradient