30 Questions
Which enzyme is predominantly responsible for the dephosphorylation of synthase b to synthase a?
Phosphoprotein phosphatase-1 (PP-1)
What is the effect of insulin on the activity of PP-1?
Increases it
What is the role of glucagon and epinephrine in relation to the activity of PP-1?
Decreases it
What is the primary function of insulin in relation to glucose uptake?
Increases glucose uptake
What is the effect of phosphorylation on synthase b?
Inhibits it
What is the effect of dephosphorylation on synthase a?
Activates it
What is the common factor between the dephosphorylation of synthase b and phosphorylase?
Phosphoprotein phosphatase-1 (PP-1)
What is the effect of glucagon and epinephrine on the uptake of glucose from the blood?
Decreases it
What is the effect of insulin on the conversion of synthase b to synthase a?
Activates it
What is the effect of glucagon and epinephrine on the conversion of synthase b to synthase a?
Inhibits it
Which enzyme is predominantly responsible for the dephosphorylation of synthase b to synthase a?
Phosphoprotein phosphatase-1 (PP-1)
What is the effect of insulin on the activity of PP-1?
Increases it
What is the role of glucagon and epinephrine in relation to the activity of PP-1?
Decreases it
What is the primary function of insulin in relation to glucose uptake?
Increases glucose uptake
What is the effect of phosphorylation on synthase b?
Inhibits it
What is the effect of dephosphorylation on synthase a?
Activates it
What is the common factor between the dephosphorylation of synthase b and phosphorylase?
Phosphoprotein phosphatase-1 (PP-1)
What is the effect of glucagon and epinephrine on the uptake of glucose from the blood?
Decreases it
What is the effect of insulin on the conversion of synthase b to synthase a?
Activates it
What is the effect of glucagon and epinephrine on the conversion of synthase b to synthase a?
Inhibits it
Which enzyme predominately carries out the dephosphorylation required for the reconversion of synthase b to synthase a?
Phosphoprotein phosphatase-1
Which other enzyme is also dephosphorylated by PP-1?
Phosphorylase
What is the opposing effect of insulin in relation to glucagon and epinephrine?
It increases the uptake of glucose from the blood
What is the role of glucagon and epinephrine in relation to glucose uptake?
They decrease the uptake of glucose from the blood
What is the effect of dephosphorylation on synthase b?
It converts synthase b to synthase a
Which enzyme is involved in the phosphorylation of synthase b?
Phosphoprotein kinase
What is the role of insulin in relation to PP-1 activity?
It activates PP-1 activity
What is the effect of glucagon and epinephrine on PP-1 activity?
They inhibit PP-1 activity
What is the role of phosphorylation in the regulation of synthase activity?
It inhibits synthase b
Which enzyme is responsible for the phosphorylation of synthase a?
Phosphoprotein kinase
Test your knowledge on the role of PP-1 in metabolic regulation and insulin's impact on glucose uptake with our quiz. From the dephosphorylation of synthase to the opposing effects of glucagon and epinephrine, this quiz will challenge your understanding of insulin's crucial role in glucose metabolism. Brush up on your biochemical vocabulary and dive into the intricacies of metabolic regulation with this informative quiz.
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