3. What are the enzymes involved in an irreversible reaction? How are these enzymes being activated? What about inhibited? What are the steps in the energy investment phase? 2. What are the steps in the energy-yielding phase?

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Chapter1: Biochemistry: An Evolving Science
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3. What are the enzymes involved in an irreversible reaction? How
ACTIVITY 10.4.2
Explain your answer briefly but concisely.
What are the steps in the energy investment phase?
2. What are the steps in the energy-yielding phase?
are these enzymes being activated? What about inhibiteda
4. Which step in the glycolytic pathway would ensure that alucose
is fated for glycolysis?
5. During strenuous activity, the demand for ATP in muscle tissue is
vastly increased. In rabbit leg muscle or turkey flight muscle, the
ATP is produced almost exclusively by lactic acid fermentation
ATP is formed in the payoff phase of glycolysis by two reactions.
promoted by phosphoglycerate kinase and pyruvate kinase.
Suppose skeletal muscle were devoid of lactate dehydrogenase.
Could it carry out the strenuous physical activity; that is, could it
generate ATP at a high rate by glycolysis? Explain.
6. The transformation of glucose to lactate n myocytes releases
only about 7% of the free energy released when glucose is
completely oxidized to CO2 and H20. Does this mean that
anaerobic glycolysis in muscle is a wasteful use of glucose?
Explain.
Transcribed Image Text:3. What are the enzymes involved in an irreversible reaction? How ACTIVITY 10.4.2 Explain your answer briefly but concisely. What are the steps in the energy investment phase? 2. What are the steps in the energy-yielding phase? are these enzymes being activated? What about inhibiteda 4. Which step in the glycolytic pathway would ensure that alucose is fated for glycolysis? 5. During strenuous activity, the demand for ATP in muscle tissue is vastly increased. In rabbit leg muscle or turkey flight muscle, the ATP is produced almost exclusively by lactic acid fermentation ATP is formed in the payoff phase of glycolysis by two reactions. promoted by phosphoglycerate kinase and pyruvate kinase. Suppose skeletal muscle were devoid of lactate dehydrogenase. Could it carry out the strenuous physical activity; that is, could it generate ATP at a high rate by glycolysis? Explain. 6. The transformation of glucose to lactate n myocytes releases only about 7% of the free energy released when glucose is completely oxidized to CO2 and H20. Does this mean that anaerobic glycolysis in muscle is a wasteful use of glucose? Explain.
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