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Questions and Answers
What is the enzyme responsible for adding orthophosphate to cleave glycogen?
What is the enzyme responsible for adding orthophosphate to cleave glycogen?
- Glycogen Phosphorylase (correct)
- Glycogen 1-phosphorylase
- Phosphoglucomutase
- Debranching enzyme
Which enzyme is involved in attacking the a-1,4 linkages during glycogenolysis?
Which enzyme is involved in attacking the a-1,4 linkages during glycogenolysis?
- Glycogen 1-phosphorylase (correct)
- Phosphoglucomutase
- Glycogen Phosphorylase
- Debranching enzyme
What is the role of debranching enzymes in glycogenolysis?
What is the role of debranching enzymes in glycogenolysis?
- Cleaving glycogen with orthophosphate
- Converting glucose 1-phosphate to glucose 6-phosphate
- Transferring glucose residues from a-1,6 to a-1,4 linkages (correct)
- Attacking a-1,4 linkages
What is the final product formed after the removal of the glucose molecule from the a-1,6 linkage?
What is the final product formed after the removal of the glucose molecule from the a-1,6 linkage?
Which enzyme is responsible for converting glucose 1-phosphate into glucose 6-phosphate?
Which enzyme is responsible for converting glucose 1-phosphate into glucose 6-phosphate?
Explain the role of Glycogen Phosphorylase in glycogenolysis.
Explain the role of Glycogen Phosphorylase in glycogenolysis.
What is the function of Glycogen 1-Phosphorylase in glycogenolysis?
What is the function of Glycogen 1-Phosphorylase in glycogenolysis?
Describe the mechanism of action of debranching enzymes in glycogenolysis.
Describe the mechanism of action of debranching enzymes in glycogenolysis.
How does phosphoglucomutase participate in glycogenolysis?
How does phosphoglucomutase participate in glycogenolysis?
Explain the significance of glucose 6-phosphate in glycogenolysis.
Explain the significance of glucose 6-phosphate in glycogenolysis.
What enzyme in the liver is responsible for converting glucose 6-phosphate into glucose when needed by the body?
What enzyme in the liver is responsible for converting glucose 6-phosphate into glucose when needed by the body?
How is Glycogen broken down in muscles for anaerobic glycolysis?
How is Glycogen broken down in muscles for anaerobic glycolysis?
What activates phosphorylase b in muscles and inhibits phosphorylase a?
What activates phosphorylase b in muscles and inhibits phosphorylase a?
Which hormone triggers the conversion of phosphorylase from its inactive form (b) to the active form (a)?
Which hormone triggers the conversion of phosphorylase from its inactive form (b) to the active form (a)?
What is the role of Ca2+ in the regulation of glycogen breakdown in muscles?
What is the role of Ca2+ in the regulation of glycogen breakdown in muscles?
How is the signal for glycogen breakdown turned off in muscles?
How is the signal for glycogen breakdown turned off in muscles?
What triggers the conversion of phosphorylase b to a in muscles?
What triggers the conversion of phosphorylase b to a in muscles?
Which subunit of phosphorylase kinase acts as the Ca2+ sensor?
Which subunit of phosphorylase kinase acts as the Ca2+ sensor?
What inhibits phosphorylase a in muscles?
What inhibits phosphorylase a in muscles?
Which hormone triggers the conversion of phosphorylase b to a?
Which hormone triggers the conversion of phosphorylase b to a?
What role does protein phosphatase 1 play in glycogen breakdown regulation?
What role does protein phosphatase 1 play in glycogen breakdown regulation?
In muscles, what activates phosphorylase kinase besides Ca2+?
In muscles, what activates phosphorylase kinase besides Ca2+?
What is the main factor that turns on phosphorylase b to a in muscles?
What is the main factor that turns on phosphorylase b to a in muscles?
What activates phosphorylase kinase by binding to the GPCR?
What activates phosphorylase kinase by binding to the GPCR?
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