The Calvin-Benson cycle and gluconeogenesis

Which of the following statements is cerrect regarding the Calvin-Benson cycle and gluconeogenesis? A. Both occur in animals. B. Both contribute to de novo glucose synthesis. C. Both are exergonic processes. D. Both are catabolic processes. 2. Dietary fiber affects health in the following ways except. A. inhibits de novo cholesterol biosynthesis B. suppresses the release of insulin

C. decreases the rate of glucose release into the blood D. increases symptoms of the metabolic syndrome E. decreases transit time of dietary matter through the alimentary canal 3. The following are correct regarding glycogen synthesis exceet A. glycogen branch chains are formed withbonds

B. UDP-glucose is a substrate in a reaction catalyzed by glycogen synthase that adds a glucosyl unit to the nonreducing end of a glycogen chain C. the first glucosyl unit in a new glycogen polymer is added to the tyrosine residue of glycogenin D. the phosphorylation of glucose to form glucose-6-phosphate traps the glucose molecule in the muscle cell E. the active form of glycogen synthase is phosphorylated

4. Dietary carbohydrate enters the blood from the small intestinal epithelial cells by A. facilitated diffusion by sodium-dependent glucose transport proteins B. active transport C. diffusion D. osmosis 5. The following are correct regarding roles of carbohydrate in metabolism excent

A. carbohydrate stored as glycogen is the dominant energy substrate for vigorous intensity exercise B. adequate carbohydrate provides sufficient concentrations of TCA (Krebs) cyele intermediates. C. glycogen depletion during prolonged high intensity exercise is associated with increased performance, decreased [free fatty acids] and increased blood [glucose].

D. carbohydrate is the preferred energy substrate for the central nervous system E. absorntion of dictary carbohydrates occurs in the upper sections (duodenum and iciunum) of the small intestine.