Question

quiz 6: cellular respiration quiz
when muscle cells are exercised extensively in the absence of sufficient oxygen,
a large amount of atp is formed
nadh molecules split
lactic acid is produced
oxidative respiration ceases

Explanation:

When muscle cells exercise without enough oxygen, they switch to anaerobic respiration. In anaerobic respiration in muscle cells, pyruvate is converted to lactic acid. Formation of a large amount of ATP occurs in aerobic respiration. NADH is involved in electron - transport chain in aerobic conditions and is not split under anaerobic conditions in muscle cells. Oxidative respiration is aerobic and slows down but does not completely cease as cells try to generate some energy anaerobically.

Answer:

C. Lactic acid is produced