Which one of the following enzymes and intermediates is not a part of the energy investment stage of glycolysis:aldolaseDHAP (dihydroxy acetone phosphate)PFK-1 (phosphofructokinase-1)GAPDH (glyceraldehyde-3-phosphate dehydrogenase)Fructose-6-phosphate (F6P)Phosphohexose isomerase

GAPDH (glyceraldehyde-3-phosphate dehydrogenase)

Explanation:

The first half of glycolysis is the energy investment stage. While the second half of glycolysis is the energy releasing stage, i.e 4 ATP molecules and 2 NADPH molecules are released.

Of all the above mentioned enzymes, glyceraldehyde 3 phosphate dehydrogenase is not involved in energy investment stage, rather it is required in the energy releasing steps;

glyceraldehyde-3-phosphate dehydrogenase catalyses the oxidation of the sugar glyceraldehyde-3-phosphate. This step produces NADPH. The sugar is then phosphorylated by the addition of a second phosphate group, producing 1,3-bisphosphoglycerate.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation: