Answer:
NAD+ would not be able to regenerate and glycolysis would stop.
Explanation:
During glycolysis, two NAD+ molecules become reduced to NADH.
- In fermentation, the NADH gives away its electrons to produce ethanol or lactate, regenerating the NAD+.
- In respiration, the NADH gives away its electrons to the electron transport chain, which eventually generates the proton gradient and ATP. This process also regenerates NAD+.
If no fermentation or respiration occurred, NADH would accumulate and NAD+ would exhaust, so glycolysis would stop.
