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Questions and Answers
Which regulatory mechanism involves the binding of a molecule at a site other than the active site, leading to a change in enzyme activity?
Which regulatory mechanism involves the binding of a molecule at a site other than the active site, leading to a change in enzyme activity?
- Allosteric regulation (correct)
- Feedback inhibition
- Covalent modification
- Competitive regulation
Which regulatory mechanism involves the binding of a molecule that resembles the substrate, competing with the substrate for the active site of the enzyme?
Which regulatory mechanism involves the binding of a molecule that resembles the substrate, competing with the substrate for the active site of the enzyme?
- Covalent modification
- Allosteric regulation
- Competitive regulation (correct)
- Feedback inhibition
Which hormone is primarily responsible for stimulating glycogenolysis in the liver?
Which hormone is primarily responsible for stimulating glycogenolysis in the liver?
- Insulin
- Aldosterone
- Epinephrine
- Glucagon (correct)
Which of the following is NOT a key enzyme involved in the regulation of glycogen metabolism?
Which of the following is NOT a key enzyme involved in the regulation of glycogen metabolism?
Which ion plays a role in the regulation of glycogen metabolism through its influence on glycogen phosphorylase activity?
Which ion plays a role in the regulation of glycogen metabolism through its influence on glycogen phosphorylase activity?
In the fasting state, which of the following leads to an increase in glycogenolysis?
In the fasting state, which of the following leads to an increase in glycogenolysis?
Which form of glycogen synthase is active and converts to inactive form in the presence of cAMP?
Which form of glycogen synthase is active and converts to inactive form in the presence of cAMP?
What leads to the conversion of inactive glycogen phosphorylase 'b' (GP-b) to active glycogen phosphorylase 'a' (GP-a)?
What leads to the conversion of inactive glycogen phosphorylase 'b' (GP-b) to active glycogen phosphorylase 'a' (GP-a)?
In the fed state, what is the effect of insulin on cAMP levels?
In the fed state, what is the effect of insulin on cAMP levels?
Which hormonal factor contributes to the activation of adenylate cyclase activity?
Which hormonal factor contributes to the activation of adenylate cyclase activity?
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