Question

Cellular respiration is a process used by cells to extract energy from food, like glucose, and use that energy to produce ATP
. This process is most efficient in the presence of oxygen. However, in the absence of oxygen, cells still need to generate energy in the form of ATP
. To accomplish this, cells have evolved anaerobic processes that allow them to keep generating the NAD+
needed to extract energy from glucose in the absence of oxygen.

Identify the anaerobic process used by animals to keep ATP
production from glucose going in the absence of oxygen by regenerating the NAD+
needed for this process.

(1 point)
Responses

Kreb’s cycle
Kreb’s cycle

alcohol fermentation
alcohol fermentation

glycolysis
glycolysis

lactic acid fermentation

Answer 1

Lactic acid fermentation.

In animal cells, pyruvate is reduced to lactate by lactate dehydrogenase, regenerating NAD+ so glycolysis can continue to produce ATP anaerobically.