Question Detail
Question
What is the primary source of carbon dioxide as a metabolic waste?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Carbon dioxide is produced from cellular respiration, specifically during the Krebs cycle and the conversion of pyruvate to acetyl-CoA. It is a major metabolic waste eliminated by the lungs.
Hint
This process uses oxygen to produce energy and generates CO2 as a byproduct.