Write a coupled reaction for the phosphorylation of fructose 6-PO4 to fructose 1,6- bisPO4 with the hydrolysis of ATP. What is the interpretation of the answer?

Draw the products that would be produced from phospholipase C cleavage of a glycerophospholipid with a phosphoserine head group, an alpha linoleic acid attached to C2 of glycerol and a linoleic acid attached to C, of glycerol. Draw these products at pH=1. Be sure to number the fatty acid carbons in your products.

Refer to the reaction scheme of the GAPDH catalyzed formation of 1,3-BPG. In the reaction, the nucleophile in step (4) is an inorganic phosphate molecule. The enzyme active site is elaborately constructed so that inorganic phosphate, not water, acts as the nucleophile. What advantage is gained by using inorganic phosphate, instead of water, as the nucleophile? Discuss in terms of the energy yield of glycolysis. No need to calculate the total net energy yield of glycolysis.

The reaction in which glucose 6-phosphate (G6P) is converted to fructose 6-phosphate (F6P) is an example of an isomerization reaction. Notice that both molecules have the molecular formula C6H13O9P. The isomerization is  catalyzed by glucose 6-phosphate isomerase. This is a reversible reaction in cells, with a moderately negative ΔG, but a very high activation energy. If you have a flask that contains a solution containing cellular concentrations of G6P and F6P, but no enzyme, how will the concentration of each molecule change over time?