30 Questions
What is the purpose of the bicyclic control system for the phosphorylation of glycogen phosphorylase?
To amplify a small initial signal for rapid glycogen mobilization
What is the result of epinephrine binding to β-adrenergic receptors on the surface of muscle cells?
Mobilization of stored glycogen
Why don't muscles release glucose into the bloodstream?
Muscles lack glucagon receptors
What is the role of hexokinase in muscle cells?
To phosphorylate and use glucose immediately once it's formed
What is the identical cascade of events that occurs in skeletal muscles?
Epinephrine binding to β-adrenergic receptors
What is the result of the amplification of a small initial signal in the bicyclic control system?
Rapid mobilization of all stored glycogen
What is the purpose of preserving glycogen in the muscles?
To enable movement
What is the result of the induction of the cascade in skeletal muscles?
Mobilization of stored glucose
What is the role of β-adrenergic receptors in muscle cells?
To activate the cascade of events that leads to glycogen mobilization
What is the result of the phosphorylation of glycogen phosphorylase?
Rapid mobilization of all stored glycogen
What is the purpose of the bicyclic control system for the phosphorylation of glycogen phosphorylase?
To amplify a small initial signal for rapid glycogen mobilization
What is the result of epinephrine binding to β-adrenergic receptors on the surface of muscle cells?
Mobilization of stored glycogen
Why don't muscles release glucose into the bloodstream?
Muscles lack glucagon receptors
What is the role of hexokinase in muscle cells?
To phosphorylate and use glucose immediately once it's formed
What is the identical cascade of events that occurs in skeletal muscles?
Epinephrine binding to β-adrenergic receptors
What is the result of the amplification of a small initial signal in the bicyclic control system?
Rapid mobilization of all stored glycogen
What is the purpose of preserving glycogen in the muscles?
To enable movement
What is the result of the induction of the cascade in skeletal muscles?
Mobilization of stored glucose
What is the role of β-adrenergic receptors in muscle cells?
To activate the cascade of events that leads to glycogen mobilization
What is the result of the phosphorylation of glycogen phosphorylase?
Rapid mobilization of all stored glycogen
Which of the following is the reason for the existence of a bicyclic control system for the phosphorylation of glycogen phosphorylase?
To mobilize all stored glycogen within seconds
What is the result of epinephrine binding to β-adrenergic receptors on the surface of muscle cells?
Induction of the cascade of events in skeletal muscles
Why don't muscles release glucose into the bloodstream?
Muscles don't have glucagon receptors
What is the function of a bicyclic control system for the phosphorylation of glycogen phosphorylase?
To mobilize all stored glycogen within seconds
What is the identical cascade of events that occurs in skeletal muscles?
Mobilization of all stored glycogen within seconds
What is the result of epinephrine binding to β-adrenergic receptors in liver cells?
Release of glucose into the bloodstream
What is the reason that muscles don't have glucagon receptors?
To preserve glycogen in the muscles
What is the role of hexokinase in the muscles?
To phosphorylate and use glucose immediately once it’s formed
What is the reason for the existence of a bicyclic control system for the phosphorylation of glycogen phosphorylase in the liver?
To release glucose into the bloodstream
What is the reason that skeletal muscles don't release glucose into the bloodstream?
To preserve glycogen in the muscles
Test your knowledge on the intricate process of glycogen phosphorylation in skeletal muscles with our quiz. Learn about the bicyclic control system and how it amplifies signals to mobilize stored glycogen. Discover the role of epinephrine in inducing the cascade of events, and become an expert on this vital metabolic process.
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