30 Questions
Which receptor is activated by epinephrine to stimulate liver phosphorylase kinase?
α-adrenergic receptor
What is the role of phospholipids in the activation of liver phosphorylase kinase?
They result in the movement of Ca2+ from the ER into the cytoplasm
Which protein is responsible for binding to Ca2+ and activating muscle phosphorylase kinase?
Calmodulin
What triggers the release of acetylcholine at a neuromuscular junction to activate muscle phosphorylase kinase?
Release of Ca2+ from the sarcoplasmic reticulum
What is the mechanism of activation for muscle phosphorylase kinase?
Binding of Ca2+-calmodulin complex
Which of the following is not required for the activation of muscle phosphorylase kinase?
Phosphorylation by PKA
What is the role of PKA in the activation of liver phosphorylase kinase?
It is not involved in the activation of liver phosphorylase kinase
Which of the following is activated by Ca2+-calmodulin complex?
Muscle phosphorylase kinase
Which of the following is not involved in the activation of muscle phosphorylase kinase?
PKA
Which of the following is not a result of the activation of liver phosphorylase kinase?
Increase in insulin secretion
Which receptor is activated by epinephrine to stimulate liver phosphorylase kinase?
α-adrenergic receptor
What is the role of phospholipids in the activation of liver phosphorylase kinase?
They result in the movement of Ca2+ from the ER into the cytoplasm
Which protein is responsible for binding to Ca2+ and activating muscle phosphorylase kinase?
Calmodulin
What triggers the release of acetylcholine at a neuromuscular junction to activate muscle phosphorylase kinase?
Release of Ca2+ from the sarcoplasmic reticulum
What is the mechanism of activation for muscle phosphorylase kinase?
Binding of Ca2+-calmodulin complex
Which of the following is not required for the activation of muscle phosphorylase kinase?
Phosphorylation by PKA
What is the role of PKA in the activation of liver phosphorylase kinase?
It is not involved in the activation of liver phosphorylase kinase
Which of the following is not activated by Ca2+-calmodulin complex?
PKA
Which of the following is not involved in the activation of muscle phosphorylase kinase?
PKA
Which of the following is not a result of the activation of liver phosphorylase kinase?
Increase in insulin secretion
Which molecule is responsible for the activation of liver phosphorylase kinase?
Epinephrine
What is the role of acetylcholine in the activation of muscle phosphorylase kinase?
Binds to sarcoplasmic Ca2+
What is the difference between the activation of liver and muscle phosphorylase kinase?
Liver phosphorylase kinase is activated by acetylcholine, while muscle phosphorylase kinase is activated by epinephrine
What is the function of phosphorylase kinase?
Activates glycogen phosphorylase
How does Ca2+ activate muscle phosphorylase kinase?
Binds to calmodulin
What is the source of Ca2+ for the activation of liver phosphorylase kinase?
Endoplasmic reticulum
What is the role of calmodulin in the activation of muscle phosphorylase kinase?
Activates the kinase
What is the role of PKA in the activation of muscle phosphorylase kinase?
Phosphorylates the kinase
What is the end result of the activation of phosphorylase kinase?
Breakdown of glycogen
What is the difference between the activation of liver and muscle phosphorylase kinase in terms of the need for phosphorylation?
Liver phosphorylase kinase needs to be phosphorylated by PKA, while muscle phosphorylase kinase does not
Test your knowledge on liver and muscle phosphorylase kinase activation pathways with this quiz! Learn about the mechanisms triggered by epinephrine and acetylcholine, and their effects on Ca2+ movement and binding to different types of phosphorylase kinase. Challenge yourself with this informative quiz on biochemical pathways!
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
