Linking a molecule of acetate to CoA is an example of what type of common biochemical reaction? ATP is required to catalyze this reaction, explain why in terms of the enthalpy and entropy change associated with the reaction

Write the balanced reaction catalyzed by phophoenolpyruvate carboxylase (P PC). Remember to add any cofactors, and to draw the structure formulas (a line-bond representation is fine) for the main substrate and product of the reaction.

For each pair of biomolecules, identify the type of reaction (oxidation‑reduction, hydrolysis, isomerization, group transfer, or internal rearrangement) required to convert the first molecule to the second. In each case, indicate the general type of enzyme and cofactor(s) or reactants required, and any other products that would result. A(n) (hydrolysis, oxidation reduction, group transfer, isomerization, internal rearrangment) reaction converts glucose to fructose. This reaction is catalyzed by a(n) (dehydrogenase, isomerase, kinase, phosphatase).

A reaction in an anabolic pathway is found to have a large negative Gibbs Free energy. How likely is it that this reaction is a regulatory step in the pathway? Explain your answer.