PS1-ATP-energetics

PS1-ATP-energetics - MCB 100B Problem Set: Energetics and...

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MCB 100B Problem Set: Energetics and ATP 1. The structure of ATP explains why its hydrolysis has such a large negative free energy. Explain. 2. It has been argued that the use of ATP rather than Pi in the phosphorylation of glucose to G6P is required for the achievement of a negative Δ G for the reaction that splits fructose-bis-phosphate. a. Why is a negative Δ G for the reaction splitting Fru-1,6-P an issue? b. Is this argument valid? Explain. 3. What is the distinction between standard free energy change and free energy change and what does each tell us about a given reaction or pathway. 4. Reactions involving oxidation/reduction of metabolic intermediates share features with reactions involving phosphorylation / dephosphorylation of metabolic intermediates. a. Each such reaction usually involves a small molecule that serves as a “carrier” of one or a group of atoms. In each case, name the “carrier”, show its structure (use detailed structure of only the part that is involved in the reaction, use names of groups to show the other components of the molecule), and draw the structure of the groups that are carried by the “carrier”. b. Energy considerations play a major role in these reactions. Using one reaction from glycolysis, show how
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PS1-ATP-energetics - MCB 100B Problem Set: Energetics and...

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