what effect would an increase in glucose typically have on the activity of glycogen synthase
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- what is one physiological consequence that might occur if gluconeogenesis was the exact opposite of glycolysis? please helpWhat is the effect of insulin on the committed step of glycolysis in the liver? Describe the mechanism by which insulin can affect the activity of this enzyme in the liver?How does glucose binding to glycogen phosphorylase stimulate glycogen synthesis?
- Why is it important that gluconeogenesis is not the exact reversal of glycolysis?Why is glycolysis more rapid after the infusion of fructose?Glucose can be made from oxaloacetate during gluconeogenesis, but if oxaloacetate concentrations are decreased,what other substance can be used to make glucose? How might this contribute to increased fat loss?
- When blood [glucose] is high and a cell’s energy needs are met, insulin stimulates glycogen synthesis. Is it counterproductive for insulin to also promote the conversion of pyruvate to acetyl-CoA? Explain.Gluconeogenesis takes place during intense exercise, which seems counterintuitive. Why would an organism synthesize glucose and at the same time use glucose to generate energy?What effect is observed on the rate of gluconeogenesis under each of the following conditions? a. low ATP concentrationc. high carbohydrate diet b. low ADP concentrationd. low carbohydrate diet
- Glucose binds to glycogen phosphorylase and competitively inhibits the enzyme. What is the physiological advantage of this?When glycogen is broken down into glucose, the process is called O glycogenesis. O gluconeogenesis. O glucagon production. O lactate production. O glycogenolysis.Would you expect insulin to increase or decrease the activity of the enzyme ATP-citrate lyase?
