Question

Muscle cells use lactic acid fermentation to:

Select one:
a. Produce ATP during "oxygen debt"
b. Generate NAD+ so that glycolysis can continue
c. Produce more ATP than is usually produced by aerobic respiration
d. Both A and B are correct
e. Both B and C are correct

Answer 1

Muscle cells utilize lactic acid fermentation to generate ATP during low oxygen conditions and to produce NAD+ for the continuation of glycolysis.

Step-by-step explanation:

Muscle cells use lactic acid fermentation to produce ATP during an 'oxygen debt' and to generate NAD+ so that glycolysis can continue. Therefore, the correct answers are both A and B. Lactic acid fermentation is a process that allows muscle cells to continue producing ATP when oxygen levels are too low for aerobic respiration.

During strenuous exercise, muscles may not receive enough oxygen to meet high energy demands, and that's when they switch to this anaerobic process. Although less efficient, this pathway generates a vital energy supply for a short period and ensures that glycolysis can continue by recycling NADH back into NAD+, which is necessary for glycolysis to proceed.