Question

homework - lab investigations of aerobic and anaerobic cellular respiration
why does anaerobic respiration produce less atp for each glucose molecule than aerobic respiration?
○ anaerobic respiration only produces atp from glycolysis.
○ anaerobic respiration requires oxygen to produce atp
○ anaerobic respiration only occurs in cells without mitochondria
○ anaerobic respiration requires carbon dioxide to produce energy.

Explanation:

To solve this, we analyze each option:

• Option 1: Anaerobic respiration only goes through glycolysis (producing 2 ATP) and does not further oxidize pyruvate in the Krebs cycle or electron transport chain (which aerobic respiration does, producing much more ATP). So this explains why it produces less ATP.
• Option 2: Anaerobic respiration does not require oxygen; aerobic does. So this is incorrect.
• Option 3: Anaerobic respiration can occur in cells with mitochondria (e.g., muscle cells in oxygen debt), so this is incorrect.
• Option 4: Anaerobic respiration does not require carbon dioxide to produce energy; in fact, some anaerobic processes produce carbon dioxide. So this is incorrect.

Answer:

A. Anaerobic respiration only produces ATP from glycolysis.