Discussion
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- Question
Each reaction in a metabolic pathway is
Options- A. reversible
- B. irreversible
- C. catalyzed by a specific enzyme
- D. controlled by the end product
- Correct Answer
- catalyzed by a specific enzyme
- 1. When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because
Options- A. their enzymes lose the proper three-dimensional shape
- B. enzyme active sites become permanently bound to substrates
- C. the activation energy for the reaction is raised
- D. there is insufficient molecular motion for substrates to interact Discuss
- 2. Glycolysis reactions take place in
Options- A. cytoplasm
- B. cell membrane
- C. cell wall
- D. plasmids Discuss
- 3. Fructose diphosphate accumulation would
Options- A. inhibit glycolysis and gluconeogenesis
- B. stimulate glycolysis and gluconeogenesis
- C. stimulate glycolysis and inhibit gluconeogenesis
- D. inhibit glycolysis and stimulate gluconeogenesis Discuss
- 4. What is the cause of the genetic disease known as Galactosemia?
Options- A. Deficiency in lactase
- B. Absence of galactose 1-P uridyl transferase
- C. Absence of lactose synthetase
- D. Non functioning of semnase Discuss
- 5. In the Glycolysis reaction, for each glucose conversion how many ATP's are produced?
Options- A. 4
- B. 2
- C. 1
- D. 3 Discuss
- 6. Which of the following enzymes plays an important role in the Cori " cycle?
Options- A. Glucokinase
- B. Glucose-6-phosphate dehydrogenase
- C. Lactate dehydrogenase
- D. Glucose isomerase Discuss
- 7. The process not involved in the formation of glucose by gluconeo-genesis is
Options- A. the conversion of oxaloacetate to glucose
- B. the conversion of lactate to pyruvate
- C. the dephosphorylation of glucose-6-phosphate
- D. all of the above Discuss
- 8. The hormones, glucagon and epinephrine, stimulate glycogen breakdown to G-6-P
Options- A. only in the liver
- B. using ATP as the phosphoryl donor
- C. directly, by binding to glycogen phosphorylase
- D. indirectly, by first stimulating adenylate cyclase to make cAMP Discuss
- 9. Regulated metabolic pathways are
Options- A. compartmentalized in eukaryotes
- B. usually regulated at the first step
- C. committed after the first step
- D. all of these Discuss
- 10. Which of the following characteristic enzymes of gluconeogensis is not found in the cytosol?
Options- A. Pyruvate carboxlyase
- B. Fructose-l,6-bisphosphatase
- C. Both (a) and (b)
- D. Glucose-6-phosphatase Discuss
Carbohydrate problems
Search Results
Correct Answer: there is insufficient molecular motion for substrates to interact
Correct Answer: cytoplasm
Correct Answer: stimulate glycolysis and inhibit gluconeogenesis
Correct Answer: Absence of galactose 1-P uridyl transferase
Correct Answer: 2
Correct Answer: Lactate dehydrogenase
Correct Answer: the conversion of oxaloacetate to glucose
Correct Answer: indirectly, by first stimulating adenylate cyclase to make cAMP
Correct Answer: all of these
Correct Answer: Pyruvate carboxlyase
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