During glycolysis, which one of the following intermediates undergoes oxidation as well as phosphorylation?

Step-by-step solution

During glycolysis, the conversion of 3-phosphoglyceraldehyde (3-PGAL) to 1,3-bisphosphoglyceric acid (1,3-BPGA) is catalyzed by the enzyme glyceraldehyde-3-phosphate dehydrogenase. In this step, 3-PGAL undergoes oxidation by the removal of hydrogen, which is accepted by NAD⁺ to form NADH + H⁺ . Simultaneously, it undergoes phosphorylation by the addition of inorganic phosphate ( H₃PO₄ ) to form 1,3-BPGA. Fructose-1,6-diphosphate undergoes cleavage to form 3-PGAL and DHAP. 3-PGA undergoes isomerization to form 2-PGA