Water is one of the end products of aerobic respiration. What is the source of the oxygen atom used in formation of the water?
A) carbon dioxide (CO₂)
B) glucose (C₆H₁₂O₆)
C) molecular oxygen (O₂)
D) pyruvate (C₃H₃O₃⁻)

Question

Quizplus · Accepted Answer

Molecular oxygen (O₂) is the source of the oxygen atom used in the formation of water. During aerobic respiration, molecular oxygen acts as the final electron acceptor in the electron transport chain, ultimately forming water as a byproduct.

Water Is One of the End Products of Aerobic Respiration