Which of the following are produced during cellular respiration?

• A. Oxygen, glucose, and ATP
• B. Glucose, water, and carbon dioxide
• C. Carbon dioxide, water, and ATP
• D. Lactic acid, oxygen, and ATP

Answer: (C)

Verified step by step guidance

1. Understand the process of cellular respiration: Cellular respiration is a metabolic process that converts glucose and oxygen into energy in the form of ATP, along with byproducts such as carbon dioxide and water.
2. Identify the main stages of cellular respiration: The process includes glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation (electron transport chain). Each stage contributes to the production of ATP and other byproducts.
3. Analyze the byproducts of each stage: During glycolysis, glucose is broken down into pyruvate, producing a small amount of ATP and NADH. The citric acid cycle further breaks down pyruvate, releasing carbon dioxide and generating more NADH and FADH2. The electron transport chain uses these molecules to produce a large amount of ATP and water as a byproduct.
4. Evaluate the options given: Compare the byproducts of cellular respiration with the options provided. Oxygen is consumed, not produced, during cellular respiration. Glucose is the starting material, not a product. Lactic acid is produced in anaerobic respiration, not aerobic respiration.
5. Conclude with the correct answer: Based on the analysis, the correct byproducts of cellular respiration are carbon dioxide, water, and ATP.