Yeast were grown with glucose either with O2 (aerobic) or sealed (anaerobic). Glucose consumption per ATP produced was tracked over 1 hour.
Why is anaerobic glucose consumption higher than aerobic for the same ATP yield?
- A
Oxygen inhibits glucose uptake.
- B
Yeast cannot ferment glucose.
- C
Aerobic respiration uses more glucose to make CO2.
- Dcheck_circle
Fermentation generates only 2 ATP per glucose, so more glucose must be processed to produce the same ATP.
Explanation
Aerobic respiration extracts ~30 ATP/glucose; fermentation only 2. To yield equivalent ATP, fermentation must consume far more substrate.