Question

the figure below illustrates oxidative phosphorylation (electron - transport chain coupled with chemiosmosis). high - energy electrons provide the power necessary to pump hydrogen ions across the inner mitochondrial membrane creating a concentration gradient. an embedded protein complex, atp synthase, is an enzyme complex with a protein rotor down the middle that turns as hydrogen ions flow through back across the inner mitochondrial membrane. this rotates proteins within the complex, which essentiallysqueezes the adp and inorganic phosphate groups together to form atp. what two molecules carry high - energy electrons to the electron - transport chain? e - & atp synthase h+ & fadh2 h+ & nadh none of these options nadh & fadh2 atp & adp clear my selection

Explanation:

In cellular respiration's electron - transport chain, NADH (nicotinamide adenine dinucleotide) and FADH2 (flavin adenine dinucleotide) are the molecules that carry high - energy electrons. They donate these electrons to the electron - transport chain, which is used to pump protons across the inner mitochondrial membrane and drive ATP synthesis.

Answer:

E. NADH & FADH2