Ribose-5-phosphate is produced by oxidative decarboxylation of 6-phosphogluconate catalyzed by the enzyme glucose-6-phosphate dehydrogenase. True O False
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- Two molecules of ATP and 4 molecules of GTP are consumed to produce one molecule of glucose in gluconeogenesis. True FalseInsulin gives a signal to inactivate hormone-sensitive lipase by dephosphorylation. TRUE/FALSEFructose 1,6-bisphosphatase is the principal enzyme controlling the rate of gluconeogenesis and is inhibited by AMP. a. True b. False
- Identify if True or False The activated form of glucose that serves as glucose donor for glycogen synthesis is formed by the reaction of UTP and glucose 1-phosphate. True FalseInsulin stimulates fatty acid synthesis by activating the acetyl CoA carboxylase a. True b. Falsetrue/false: The majority of the urea cycle occurs in the cytosol of cells.
- All of the following statements concerning glycogenesis and glycogenolysis are true EXCEPT A. Taking this test will activate glycogen phosphorylase and inhibit glycogen synthase B. Being chased by a bear will activate glycogen synthesis and inhibit glycogen phosphorylase C. Exercise or “fight-or-flight” circumstances will result in an increase in epinephrine causing increased glycogen phosphorylase and decreased glycogen synthase activities D. High blood glucose and high insulin levels will activate glycogen synthesis and inhibit glycogen phosphorylase E. Glucagon will activate glycogen phosphorylase and inhibit glycogen synthaseList some of the medically important implications of the cortisol-induced effects on organic metabolism?GluT transporters are responsible for passive transport of Glucose into the cell to yield G-6-P that cannot exit the cell; in liver cells this process is always regulated by insulin. True or False