How is oxygen involved in respiration??

Question

can anyone help me out. I am in bio Honors and am really struggling. How is oxygen involved in respiration?

Answer 1

Its the terminal electron acceptor in the ETC

Answer 2

don't know.

Answer 3

Aerobic respiration requires oxygen in order to generate energy (ATP). It is the preferred method of pyruvate breakdown from glycolysis and requires that pyruvate enter the mitochondrion to be fully oxidized by the Krebs cycle. The product of this process is energy in the form of ATP (Adenosine Triphosphate), by substrate-level phosphorylation, NADH and FADH2.