Question

question 17 of 20 > anaerobic respiration allows a cell to break down carbohydrates in the absence of oxygen. identify how nad⁺ is used by animal cells during anaerobic respiration. in anaerobic conditions, the nad⁺ produced during fermentation is used as energy in place of atp. when nadh is converted to nad⁺ during fermentation, energy needed to make pyruvate is released. nad⁺ is converted to nadh during fermentation and used for anaerobic respiration to begin. glycolysis requires nad⁺ produced from fermentation to produce atp. fermentation pathways yield two atp molecules, which the cell uses to continue glycolysis.

Explanation:

In animal - cell anaerobic respiration (lactic - acid fermentation), glycolysis is the first step which requires NAD⁺. During glycolysis, glucose is broken down into pyruvate and NAD⁺ is reduced to NADH. To continue glycolysis, the NADH must be oxidized back to NAD⁺. Fermentation pathways in animal cells (lactic - acid fermentation) convert NADH back to NAD⁺, and the NAD⁺ produced from fermentation is used in glycolysis to produce ATP.

Answer:

Glycolysis requires NAD⁺ produced from fermentation to produce ATP.