Aerobic Respiration Breaks Down Glucose Using Oxygen

Steps:

• Recall the definition: Aerobic respiration is the process where cells use oxygen to fully oxidize glucose, releasing energy.
• Identify the overall reaction: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP (energy).
• Evaluate each option against this reaction and process location.
• Select the statement that accurately describes the breakdown or role of components.

Why C is correct:

• In aerobic respiration, glucose (C6H12O6) is oxidized to smaller molecules like CO2 and H2O, as shown in the balanced equation, producing maximum ATP.

Why the others are wrong:

• A: Aerobic respiration occurs in mitochondria, not alveoli, which handle gas exchange in lungs.
• B: Aerobic respiration releases more energy (up to 38 ATP) than anaerobic (only 2 ATP).
• D: Oxygen acts as the final electron acceptor to form water, not broken down for energy release.

Final answer: C