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CHOOSE THE CORRECT LETTER
1.What kind of reaction is catalyzed by hexokinase?
A. reduction
B.phosphorylation
C.isomerization
D. oxidation
2.What type of reaction regenerates oxaloacetate after one turn of the Kreb's cycle?
A.dehydration
B.reduction
C.oxidation
D. hydration
Step by step
Solved in 2 steps
- CHOOSE THE CORRECT LETTER 1.Which of the following reaction types are NOT found in glycolysis?A. isomerizationB. oxidationC. reductionD. phosphorylation 2.What type of reaction regenerates oxaloacetate after one turn of the Kreb's cycle?A. hydrationB. dehydrationC. reductionD. oxidationCHOOSE THE CORRECT LETTER 1.What kind of reaction is catalyzed by hexokinase?A. oxidationB. reductionC. phosphorylationD. isomerization 2.Which of the following reaction types are NOT found in glycolysis?A. phosphorylationB. reductionC. oxidationD. isomerization 3.What type of reaction is catalyzed by glyceraldehyde-3-phosphate dehydrogenase?A.phosphorylationB.reductionC. isomerizationD. oxidationCHOOSE THE CORRECT LETTER What type of reaction is catalyzed by glyceraldehyde-3-phosphate dehydrogenase?A.phosphorylationB.reductionC. isomerizationD. oxidation
- CHOOSE THE CORRECT LETTER 1.Which of the following substrates is used in the first oxidation step of the Kreb's cycle to produce NAH and CO2?A. isocitrateB.a-ketoglutarateC. citrateD. succinyl-CoA 2.What is the reason for isomerization of citrate to isocitrate?A.The reaction converts a tertiary alcohol, which cannot easily be oxidized, to a secondary alcohol that can be oxidizedB. Isocitrate protects cells from the toxic effects of arsenite ion.C. The reaction is one major regulatory step for the citric acid cycle because it functions as a rate limiting step.D. Isocitrate is a substrate for a reaction that occurs spontaneously without enzymatic catalysisCHOOSE THE CORRECT LETTER What type of reaction is catalyzed by glyceraldehyde-3-phosphate dehydrogenase?A.oxidationB. reductionC. phosphorylationD. isomerizationCHOOSE THE CORRECT LETTER 1.What defines the sum of all biochemical reactions of an organism?A.EmbolismB. MetabolismC. AnabolismD. Catabolism 2.Which of the following biochemical reactions is NOT a catabolic reaction?A.GlycogenolysisB. GluconeogenesisC. Citric Acid CycleD.Glycolysis
- CHOOSE THE CORRECT LETTER 1.Which of the following molecules are NOT involved in the reaction catalyzed by phosphoglycerate kinase?A.3-phosphoglycerateB.NADHC. 1,3-bisphosphoglycerateD. ATP 2.What is the significance of the Kreb's cycle as a metabolic pathway?A.It allows recovery of energy from carbohydrates only.B.It allows recovery of energy from glucogenic and ketogenic amino acids.C.It allows recovery of energy from fatty acids only.D. It allows recovery of energy from several metabolic fuels that are brokEn down to acetyl-CoA 3.What is the product of glucose metabolism in skeletal muscles in aerobic conditions?A. glycogenB. Acetyl-CoAC. lactateD. acetaldehydeCHOOSE THE CORRECT LETTER 1.Stearic acid requires eight cycles of B-oxidation to be completely converted to acetyl-CoA.A. TrueB. False 2.ATP is produced from the electron transport system via oxidative phosphorylation.A. TrueB. FalseCHOOSE THE CORRECT LETTER 1.Which of the following enzymes catalyze the reaction involved in the production of FADHy in the Kreb's cycle?A. malate dehydrogenaseB. a-ketoglutarate dehydrogenaseC.isocitrate dehydrogenaseD. succinate dehydrogenase 2.Steric acid requires eight cycles of B-oxidation to be completely converted to acety/-CoA.A.TrueB. False
- CHOOSE THE CORRECT LETTER 1.What kind of cells often use the glycerol-phosphate shuttle?A.brainB. heartC.liverD. kidney 2.What is the net ATP yield of the complete glycolysis of 5 molecules of glucose?A. 4B. 5C. 10D. 12 3.Which of the following substrates is used in the first oxidation step of the Kreb's cycle to produce NADH and COy?A. isocitrateB. a-ketoglutarateC. citrateD. succinyl-CoACHOOSE THE CORRECT LETTER 1.Glycogenesis is favored when there is low ATP concentration. Glycogenolysis is favored when there is a low ATP concentrationA. Only the second statement is correctB. Both statements are correctC. Neither statements are correctD. Only the first statement is correct 2.High energy condition favors glycolysis, Krebs cycle and b-oxidation of fatty acids. Low energy condition favors glycogenesis andfatty acid synthesis.A. Neither statements are correctB.Only the first statement is correctC.Only the second statement is correctD. Both statements are correctCHOOSE THE CORRECT LETTER 1.What is the reason for isomerization of citrate to isocitrate?A.The reaction converts a tertiary alcohol, which cannot easily be oxidized, to a secondary alcohol that can be oxidizB. Isocitrate protects cells from the toxic effects of arsenite ion.C. The reaction is one major regulatory step for the citric acid cycle because it functions as a rate limiting step.D. Isocitrate is a substrate for a reaction that occurs spontaneously without enzymatic catalysis 2.Which of the following molecules is NOT involved in the cycle of B-oxidation?A. coenzyme AB. B-hydroxybutyrateC. B-ketoacyl-CoAD. acetyl-CoA
