Question #7a13e
1 Answer
Pyruvate, 2 NADH and 2 ATPs are the important products of glycolysis.
Explanation:
Pyruvate is the final product of the glycolytic pathway which can serve as starting material for other pathways like the Krebs cycle and fatty acid synthesis. NADH is produced during step number 6 wherein glyceraldehyde 3-phosphate is converted to 1,3-bisphosphoglycerate which requires the presence of inorganic phosphate and NAD catalyzed by glyceraldehyde 3-phosphate dehydrogenase. However, since 2 glyceraldehyde 3-phosphate was produced during glycolysis, overall 2 NADH will be produced.
Meanwhile, 2 ATPs were produced during a substrate level phosphorylation that occur at step number 7 and 10 of the cycle. Step 7 involves the the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate catalyzed by phosphoglycerate kinase. On the other hand, step 10 involves the conversion of phosphoenol pyruvate to pyruvate catalyzed by pyruvate kinase. On both steps, the phosphate group in the intermediates is transferred to ADP to form ATP.
This overall will result to the formation of 4 ATPS. However during the preparatory phase of glycolysis, 2 ATPs was consumed so that the net yield will be only two ATPs.
