Question

A muscle cell undergoes glycolysis to generate pyruvate. Considering that the cell remains under aerobic conditions and moves on to the ETC via the Krebs cycle, which of the following would be the final electron acceptor in this case?

A) hydrogen
B) nitrate
C) oxygen

Answer 1

The answer is C) oxygen. Electron transport chain is a series of oxidation-reduction reactions. It uses electrons released during different stages of cellular respiration. Those electrons are transferred through the chain until they reach oxygen which is the final acceptor of the electrons.