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12 Nov 2019
Please select ALL that apply.
What is the fate of glucose-6-phosphate, glycolytic intermediates, and pentose phosphate pathway intermediates if the cell needs much more ribose 5-phosphate than NADPH? That is, the cell needs ribose 5-phosphate but has a relatively high concentration of NADPH and a low concentration of NADP+. (These conditions may occur in rapidly dividing cells.) Select all that apply. Glycolytic intermediates can only enter the pentose phosphate pathway through conversion to pyruvate and subsequent gluconeogenesis. Most glucose 6-phosphate enters the pentose phosphate pathway. The oxidative pentose phosphate pathway reaction catalyzed by glucose 6-phosphate dehydrogenase is slowed. Most glucose 6-phosphate enters the glycolytic pathway and is converted to fructose 6-phosphate and glyceraldehyde 3-phosphate. Under the given conditions, all triose phosphates are converted to pyruvate by the glycolytic pathway. One molecule of glyceraldehyde 3-phosphate and two molecules of fructose 6-phosphate are used to generate three molecules of ribose 5-phosphate.
Please select ALL that apply.
What is the fate of glucose-6-phosphate, glycolytic intermediates, and pentose phosphate pathway intermediates if the cell needs much more ribose 5-phosphate than NADPH? That is, the cell needs ribose 5-phosphate but has a relatively high concentration of NADPH and a low concentration of NADP+. (These conditions may occur in rapidly dividing cells.) Select all that apply. Glycolytic intermediates can only enter the pentose phosphate pathway through conversion to pyruvate and subsequent gluconeogenesis. Most glucose 6-phosphate enters the pentose phosphate pathway. The oxidative pentose phosphate pathway reaction catalyzed by glucose 6-phosphate dehydrogenase is slowed. Most glucose 6-phosphate enters the glycolytic pathway and is converted to fructose 6-phosphate and glyceraldehyde 3-phosphate. Under the given conditions, all triose phosphates are converted to pyruvate by the glycolytic pathway. One molecule of glyceraldehyde 3-phosphate and two molecules of fructose 6-phosphate are used to generate three molecules of ribose 5-phosphate.
Tod ThielLv2
18 Jan 2019