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PracticeExam4

The pentose phosphate pathway is used to provide

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23. The pentose phosphate pathway is used to provide metabolic intermediates for the biosynthesis of: a. glucose. b. fructose. c. aromatic amino acids. d. triacylglycerol. e. alanine. 24. Which of the following statements is not true concerning glycolysis in anaerobic muscle? 25. During strenuous exercise, the NADH formed in the glyceraldehyde 3-phosphate dehydrogenase reaction
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in skeletal muscle must be reoxidized to NAD + if glycolysis is to continue. The most important reaction involved in the reoxidation of NADH is: 26. An enzyme used by both glycolysis and gluconeogenesis is: 27. After glucose-6-phosphate is converted to 6-phosphogluconate in the PPP, it is converted to: a. glycerate and 3-phosphoglycerate by an aldolase split. b. glycolic acid and 4-phospho-erythrose by an aldolase split. c. 1,6-bisphosphogluconate. d. keto and aldopentoses. e. oxidized to a six carbon dicarboxylic acid. 28. The entry of galactose into glycolysis involves: 29. The entry of glycerol into glycolysis produces: 30. A major diving force in PEP carboxykinase is: Written Answer Questions: 1. Diagram epinephrin activation of Ca ++ release from the endoplasmic reticulum. Be sure to label all the parts of your diagram. (7 points)
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2. The complete oxidation of glucose to 6 waters and 6 CO 2 has a G’ o = -2,840 kJ/mole. Suppose a cell converted 1 mmole of glucose to CO 2 and water, how many ATP’s could be generated? (7 points) 3. Central metabolism contains several pathways (glycolysis, pentose-phosphate-pathway, citric acid cycle). All ot these pathways have two general outputs: (6 points) One is , and the other is .
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