BIOC 431 Exam 3 F12

Thus glycogen synthesis will only occur when the

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Unformatted text preview: mM Muscle uses glucose for energy in glycolysis and the TCA cycle. (c) Activity of the catabolic and anabolic pathways as the ATP:ADP ratio increases in each tissue Neither enzyme is directly regulated by ATP or ADP but each is tied to the energy needs of the cell through availability of glucose. Thus glycogen synthesis will only occur when the ATP:ADP ratio is high and glycogen degradation will occur when the ratio is low. Page | 1 [2] The oxidative pentose phosphate pathway provides an alternative mechanism for the catabolism of glucose. (a) Name the two enzymes that catalyze the oxidation of glucose along with their substrates, products and cofactors. Write equations if you wish. (6 points) glucose- 6- phosphate dehydrogenase glucose- 6- phosphate + NADP+ - > 6phosphonoglucolactone + NADPH 6- phosphonogluconate dehydrogenase 6- phosphonogluconate + NADP+ - >Ribulose- 5- phosphate + NADPH + CO2 (b) These two enzymatic steps are driven by molecular rearrangements during the reactions that are irrever...
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