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10 Questions

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Master Glycogen Metabolism

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Questions and Answers

Which protein kinases catalyze phosphorylation in response to cAMP signaling?

Multiple protein kinases (correct)

Protein kinase C only

Protein kinase A only

Protein kinase B only

How many distinct serine residues are involved in phosphorylation of glycogen synthase?

At least 11

At least 7

At least 5

At least 9 (correct)

What is the effect of high cAMP on glycogen synthase?

No effect

Depends on the type of protein kinase activated

Activation

Inactivation (correct)

What is the effect of high cAMP on glycogen phosphorylase?

Activation Signup and view all the answers

Which enzyme is reciprocally controlled by cAMP signaling?

Both glycogen synthase and phosphorylase Signup and view all the answers

What is the role of protein kinase in glycogen metabolism?

To activate glycogen phosphorylase Signup and view all the answers

What is the effect of phosphorylation on glycogen synthase?

Inactivation Signup and view all the answers

What is the effect of dephosphorylation on glycogen phosphorylase?

Inactivation Signup and view all the answers

What is the effect of low cAMP on glycogen metabolism?

Activation of glycogen synthase Signup and view all the answers

What is the effect of high cAMP on protein kinase activity?