13. Which of the following is (are) a final prod a. Pyruvate b. Lactate. c. Ethanol and CO e. b
and c. 14- Which of the following is (are) a final product(s) of acrobic respiration? a. Pyruvate.
b. Lactate. c. Ethanol and CO. e. b and c. 15- Which of the following enzymes catalyzes a bypass
eaction of glusconeogenesis? b. Phosphofructokinase-1. c. Triose phosphate Isomerase d.
Pyruvate kinase e. 16- Which of the following enzymes is involved in both glycolysis and
gluconcogenesis? a. Hexokinase. b. Phosphofructokinase-1 c. Triose phosphate Isomerase d.
Pyruvate kinase. e. Glucose-6-phosphatase 7- Arsenate is an ion that can replace inorganic
phosphate (Pi) in the reaction catalyzed by Glyceraldehyde 3-phosphate dehydrogenase, causing
t phosphate into 3- phosphoglycerate. Which of the following glycolytic metabolites will be
absent in a cell that is exposed to arsenate? the direct conversion of Glyceraldehyde-3- a.
Glucose 6-phosphate b. Fructose 6-phosphate c. 1.3-bisphosphoglycerate d. 3-phosphoglycerate
18- Which of the following cells do you think will be most acutely affected by arsenate
poisoning? a. A brain. b. A skeletal muscle cell. c. A red blood cell. d. a and b. e. These cells will
all be equally affected ? 19. When you compare the catabolism of a saturated fatty acid to that of
an unsaturated fatty acid of equal length, which of the following will you expect to be different?
a. The number of rounds of beta-oxidation required for the breakdown b. The number of acetyl
CoA units produced during the breakdown. c. The number of NADH molecules produced during
the breakdown d. The number of FADH, molecules produced during the breakdown. e. All of the
above.
Solution
13. E.
The fermentatio products are alcohol, carbon dioxide, lactic acid and acetic acid
14. D. CO2 + H2O
C6H12O6 + 6O2 --> 6CO2 + 6H2O + 36 or 38 ATP
15. D. Pyruvate Kinase
Two step
1. Pyruvate carboxylase
Pyruvate --> oxaloacetate
-stimulated by acetyl-CoA.
2. Phosphoenolpyruvate carboxylase
oxaloacetate --> Phosphoenolphyrvate
16. C. Triose phosphate isomerase
17. C. 1,3 bisphosphoglycerate
18. C. Red blood cell.
and c. 14- Which of the following is (are) a final product(s) of acrobic respiration? a. Pyruvate.
b. Lactate. c. Ethanol and CO. e. b and c. 15- Which of the following enzymes catalyzes a bypass
eaction of glusconeogenesis? b. Phosphofructokinase-1. c. Triose phosphate Isomerase d.
Pyruvate kinase e. 16- Which of the following enzymes is involved in both glycolysis and
gluconcogenesis? a. Hexokinase. b. Phosphofructokinase-1 c. Triose phosphate Isomerase d.
Pyruvate kinase. e. Glucose-6-phosphatase 7- Arsenate is an ion that can replace inorganic
phosphate (Pi) in the reaction catalyzed by Glyceraldehyde 3-phosphate dehydrogenase, causing
t phosphate into 3- phosphoglycerate. Which of the following glycolytic metabolites will be
absent in a cell that is exposed to arsenate? the direct conversion of Glyceraldehyde-3- a.
Glucose 6-phosphate b. Fructose 6-phosphate c. 1.3-bisphosphoglycerate d. 3-phosphoglycerate
18- Which of the following cells do you think will be most acutely affected by arsenate
poisoning? a. A brain. b. A skeletal muscle cell. c. A red blood cell. d. a and b. e. These cells will
all be equally affected ? 19. When you compare the catabolism of a saturated fatty acid to that of
an unsaturated fatty acid of equal length, which of the following will you expect to be different?
a. The number of rounds of beta-oxidation required for the breakdown b. The number of acetyl
CoA units produced during the breakdown. c. The number of NADH molecules produced during
the breakdown d. The number of FADH, molecules produced during the breakdown. e. All of the
above.
Solution
13. E.
The fermentatio products are alcohol, carbon dioxide, lactic acid and acetic acid
14. D. CO2 + H2O
C6H12O6 + 6O2 --> 6CO2 + 6H2O + 36 or 38 ATP
15. D. Pyruvate Kinase
Two step
1. Pyruvate carboxylase
Pyruvate --> oxaloacetate
-stimulated by acetyl-CoA.
2. Phosphoenolpyruvate carboxylase
oxaloacetate --> Phosphoenolphyrvate
16. C. Triose phosphate isomerase
17. C. 1,3 bisphosphoglycerate
18. C. Red blood cell.
