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Exam3-07 - CH369 Exam 3 Fall 2007 Multiple Choice 1 The...

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CH369 Exam 3 Fall 2007 - Multiple Choice 1. The pancreas secretes which of the following enzymes? a. amylase b. pepsin c. lipase d. trypsin e. all of the above (except pepsin) 2. Bile salts are secreted by the 3. Bonds in fats, proteins and carbohydrates are all split via _______________ reactions. 4. In glycogen, branch points are attached to which carbon atom of a glucose residue in the main chain? 5. In glycolysis, the net ATP input from the conversion of glucose to fructose-1,6- bisphosphate is a. 1 b. 2 c. 3 d. 4 e. 5 6. If a molecule of glucose is fully metabolized via anaerobic glycolysis in muscle, the end product is
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7. Phosphoenolpyruvate is an example of what kind of inhibitor to phosphofructokinase? 8. The following diagram indicates the catabolism of pyruvate through the citric acid cycle. At which of the indicated steps is carbon dioxide produced? α -ketoglutarate oxalosuccinate succinyl-CoA isocitrate succinate cis-aconitase fumarate citrate malate oxaloacetate acetyl-CoA pyruvate 9. Glucose-1-phosphate is converted to fructose-6-phosphate in two sequential reactions: Glucose-1-phosphate Glucose-6-phosphate G o = 1.7 kcal/mole Glucose-6-phosphate Fructose-6-phosphate G o = -4.0 kcal/mole What is the G o for the overall reaction? a. 5.7 kcal/mole b. -2.3 kcal/mole c. -1.7 kcal/mole d. 2.3 kcal/mole e. -5.7 kcal/mole 6 7 5 8 4 9 3 10 2 11 1
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10. The most important control point in the glycolytic sequence from glucose to lactate occurs at the step where
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