All of the following statements about pyruvate dehydrogenase are true EXCEPT: It converts pyruvate to acetyl-CoA. It is very closely related to alpha-ketoglurarate dehydrogenase. It uses three different cofactors. All of these are true. It produces NADH. 2. Which statement about lactate is TRUE? It is produced when NADH levels are low. It is produced when oxygen levels are high. It is produced when ATP levels are high. It is produced when glyceraldehyde-3-phosphate levels are high. It is produced when NAD+ levels are high. 3. Phosphoglycerate kinase is fundamentally similar in function to: None of these phosphofructokinase hexokinase pyruvate kinase galactokinase 4. In the Krebs cycle, the energy released by taking a compound off Coenzyme A is used to: isomerize citrate decarboxylate isocitrate oxidize carbon make a new carbon-carbon bond. reduce carbon 5. True or False Succinate dehydrogenase performs an oxidative decarboxylation reaction. In the Krebs cycle, malate dehydrogenase reduces NAD+.
All of the following statements about pyruvate dehydrogenase are true EXCEPT: It converts pyruvate to acetyl-CoA. It is very closely related to alpha-ketoglurarate dehydrogenase. It uses three different cofactors. All of these are true. It produces NADH. 2. Which statement about lactate is TRUE? It is produced when NADH levels are low. It is produced when oxygen levels are high. It is produced when ATP levels are high. It is produced when glyceraldehyde-3-phosphate levels are high. It is produced when NAD+ levels are high. 3. Phosphoglycerate kinase is fundamentally similar in function to: None of these phosphofructokinase hexokinase pyruvate kinase galactokinase 4. In the Krebs cycle, the energy released by taking a compound off Coenzyme A is used to: isomerize citrate decarboxylate isocitrate oxidize carbon make a new carbon-carbon bond. reduce carbon 5. True or False Succinate dehydrogenase performs an oxidative decarboxylation reaction. In the Krebs cycle, malate dehydrogenase reduces NAD+.
Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter19: The Tricarboxylic Acid Cycle
Section: Chapter Questions
Problem 22P: Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is...
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1. All of the following statements about pyruvate dehydrogenase are true EXCEPT:
- It converts pyruvate to acetyl-CoA.
- It is very closely related to alpha-ketoglurarate dehydrogenase.
- It uses three different cofactors.
- All of these are true.
- It produces NADH.
2. Which statement about lactate is TRUE?
- It is produced when NADH levels are low.
- It is produced when oxygen levels are high.
- It is produced when ATP levels are high.
- It is produced when glyceraldehyde-3-phosphate levels are high.
- It is produced when NAD+ levels are high.
3. Phosphoglycerate kinase is fundamentally similar in function to:
- None of these
- phosphofructokinase
- hexokinase
- pyruvate kinase
- galactokinase
4. In the Krebs cycle, the energy released by taking a compound off Coenzyme A is used to:
- isomerize citrate
- decarboxylate isocitrate
- oxidize carbon
- make a new carbon-carbon bond.
- reduce carbon
5. True or False
- Succinate dehydrogenase performs an oxidative decarboxylation reaction.
-
In the Krebs cycle, malate dehydrogenase reduces NAD+.
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