What is a positive aspect of anaerobic glycolysis?

What is a positive aspect of anaerobic glycolysis?

• A. It yields 36 ATP molecules per glucose.
• B. It uses oxygen efficiently.
• C. It produces 2 ATP molecules per glucose.
• D. It prevents acidosis.

Answer: (C)

In low-oxygen situations, the body can still generate energy quickly by pushing glucose through glycolysis to pyruvate and then to lactate, while regenerating NAD+ so glycolysis can continue. This allows ATP to be produced without relying on mitochondria or oxygen. The net yield is two ATP per glucose, which is modest but immediate, making it a valuable short-term energy source when oxygen is scarce. The much larger yield of about 30–36 ATP comes from full aerobic respiration, which requires oxygen. Anaerobic glycolysis does not use oxygen efficiently, and lactate production can contribute to acidosis rather than prevent it. So the key positive aspect is the rapid, oxygen-independent production of ATP, even though the total energy yield is limited.

In low-oxygen situations, the body can still generate energy quickly by pushing glucose through glycolysis to pyruvate and then to lactate, while regenerating NAD+ so glycolysis can continue. This allows ATP to be produced without relying on mitochondria or oxygen. The net yield is two ATP per glucose, which is modest but immediate, making it a valuable short-term energy source when oxygen is scarce. The much larger yield of about 30–36 ATP comes from full aerobic respiration, which requires oxygen. Anaerobic glycolysis does not use oxygen efficiently, and lactate production can contribute to acidosis rather than prevent it. So the key positive aspect is the rapid, oxygen-independent production of ATP, even though the total energy yield is limited.