Question

glycolysis begins with the phosphorylation of a molecule of ________.
o glucose
o adp
o pyruvic acid
o atp

Explanation:

Glycolysis is the first - stage of cellular respiration. It starts with the phosphorylation of glucose. Glucose is a six - carbon sugar molecule that gets phosphorylated to glucose - 6 - phosphate by the enzyme hexokinase using an ATP molecule. ADP, pyruvic acid, and ATP are not the starting molecules for the phosphorylation step in glycolysis.

Answer:

A. glucose