Question 10o Select all the central metabolic pathways that yield precursor metabolites necessary for life. (select. Pentose phosphate pathway O Nitrogen dissimilation Entner-Doudoroff pathway OElectron transport system V Glycolysis

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Question 29 Which enzymes produce 2 ATP's for every glucose? hexokinase O phosphoglyceromutase O Triose phosphate dehydrogenase O phosphofructokinase O pyruvate kinase

Question 28 Which enzyme breaks glucose into 2 molecules of 3 carbons each? O pyruvate deydrogenase O phosphoglycerokinase Aldolase O phosphoglucoisomerase O Hexokinase

Question 1: In some microorganisms, carbon fixation occurs by reversal of the citric acid cycle. This reversal is accomplished in part by the use of a strong reductant (ferredoxin) to drive the alpha-ketoglutarate dehydrogenase reaction in the reductive direction. Part a: ΔG°‘ for reaction as it occurs in the ‘normal’ (oxidative) citric acid cycle is -30.1 kJ/mol. The standard reduction potential for NADH is -0.32 V. In order to drive the reaction in the reverse direction, the reductant (a ferredoxin) must have a lower reduction potential than NADH/NAD+. Remembering that this is a two-electron reduction, and using the numbers given just above, compute the value of the ferredoxin reduction potential that would be needed to make the standard free energy zero (so that the reductive reaction is enegetically just as favorable as the oxidative reaction). Assume that all of the other reactants are the same in the reductive as in the oxidative reaction. Write out the steps in your calculation;…

Question 9 Match the enzyme with a phrase about it. v Catalyzes a substrate lovei phosphorylation 3. Pyruvate kinaise v breaks down sucrose to glucose and fructose b. phosphovylase e phosphohaxesa semerase (ato called giasose-6 phosphete samerane) v is a type of isomerase v removes one glucose residue from glycogen d. Sucrase A Muving to another question will save this response

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Question 11 Which reaction in glycolysis produces NADH? O oxidation of glyceraldehyde 3-phosphate O oxidation of 1,3-biphosphoglycerate isomerization of glucose 6-phosphate O cleavage of glyceraldehydes 3-phosphate O phosphorylation of fructose 6-phosphate

Question 1 a. What enzyme works on glucose-6-P when the energy charge is 0.80? b. What enzyme works on glucose-6-P when the energy charge is 0.97? c. What enzyme works on glycogen when the energy charge is 0.80?d. d. What enzyme works on glycogen when the energy charge is 0.97? e. What enzyme works on pyruvate when the energy charge is 0.80 (assume high O2)? f. What enzyme works on pyruvate when the energy charge is 0.97?