13. Which of the following is (are) a final prod a. Pyruvate b. Lactate. c. Etha

Question

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.

Explanation / Answer

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.
RBC are completely reliant on glycolysis for energy.

19. E. All of the above

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