Question

which step in glycolysis involves electron carriers?
o two 3 - carbon compounds are converted into two molecules of pyruvate. at the same time, four molecules of atp are produced.
o two phosphates are added to two molecules of adp and electrons and hydrogen ions (h+) combine with two nad+ molecules to form two nadh mol - ecules.
o two phosphate groups, derived from two molecules of atp, are joined to glucose.

Explanation:

Glycolysis is a metabolic pathway in biology. In the pay - off phase of glycolysis, two 3 - carbon compounds (glyceraldehyde - 3 - phosphate) are converted into two molecules of pyruvate. During this conversion, four molecules of ATP are produced and two molecules of NAD⁺ are reduced to NADH by accepting electrons and hydrogen ions. This step involves electron carriers (NAD⁺/NADH).

Answer:

Two 3 - carbon compounds are converted into two molecules of pyruvate. At the same time, four molecules of ATP are produced, and electrons and hydrogen ions (H⁺) combine with two NAD⁺ molecules to form two NADH mol - ecules.