Question

Sort the molecules in the glycolysis pathway based on whether they are intermediates or products in the first half of the pathway that requires energy, or are intermediates in the second half of the pathway that produces energy.glucose-6-phosphatefructose-6-phosphatefructose-1,6-bisphosphateglyceraldehyde-3-phosphatedihydroxyacetone phosphate1,3-bisphosphoglycerate3-phosphoglycerate2-phosphoglyceratephosphoenolpyruvate

Answer 1

Intermediates or products in the first half of the pathway that requires energy are:

glucose-6-phosphate

fructose-6-phosphate

fructose-1,6-bisphosphate

dihydroxyacetone phosphate

glyceraldehyde-3-phosphate

Intermediates in the second half of the pathway that produces energy are:

1,3-bisphosphoglycerate

3-phosphoglycerate

2-phosphoglycerate

phosphoenolpyruvate

Step-by-step explanation:

Glycolysis is the process in which glucose is broken down to pyruvate in order to produce energy. It occurs in cytosol and it can be divided into two phases: phase that requires energy (two ATP molecules are used) and phase that produces energy (four ATP molecules together with two NADH are produced).

After the glycolysis, which is the first step in cellular respiration, final products (two pyruvats) are further used. The next steps are: pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation.