after glycolysis, the pyruvate molecules can follow two different metabolic routes: aerobic and anaerobic…

after glycolysis, the pyruvate molecules can follow two different metabolic routes: aerobic and anaerobic respiration. what is the main difference between these?\na) they are the same metabolic pathway, occurring in different locations\nb) anaerobic respiration does not need oxygen to occur and aerobic respiration does\nc) anaerobic respiration does not occur in mammalian cells\nd) aerobic respiration occurs in the presence of oxygen and anaerobic respiration is inhibited in its presence

after glycolysis, the pyruvate molecules can follow two different metabolic routes: aerobic and anaerobic respiration. what is the main difference between these?\na) they are the same metabolic pathway, occurring in different locations\nb) anaerobic respiration does not need oxygen to occur and aerobic respiration does\nc) anaerobic respiration does not occur in mammalian cells\nd) aerobic respiration occurs in the presence of oxygen and anaerobic respiration is inhibited in its presence

Answer

Brief Explanations:

  • Option a is incorrect: they are distinct pathways, not the same.
  • Option b is incomplete: it misses that anaerobic respiration is inhibited by oxygen, which is a key differentiator.
  • Option c is incorrect: anaerobic respiration (lactic acid fermentation) occurs in mammalian muscle cells during oxygen deprivation.
  • Option d correctly states the core difference: aerobic respiration requires oxygen, while anaerobic respiration cannot proceed in oxygen's presence.

Answer:

d) Aerobic respiration occurs in the presence of oxygen and anaerobic respiration is inhibited in its presence