Question

When the blood glucose concentration is low, the pancreas secretes glucagon to signal the liver to produce glucose and glucose-1-phosphate. Which metabolic steps are involved in this biosignaling pathway

Answer 1

See below (Correct Answer: I and IV)

Step-by-step explanation:

Inactivation of glycogen synthase via phosphorylation by protein kinase A

Activation of glycogen synthase via phosphorylation by protein kinase A

Activation of phosphofructokinase-2 via phosphorylation by protein kinase A

Activation of fructose-2,6-bisphosphatase via phosphorylation by protein kinase A

Activation of phosphofructokinase-1 by fructose-2,6-bisphosphate

Inhibition of fructose-1,6-bisphosphatase by fructose-2,6-bisphosphate

Inactivation of pyruvate kinase via phosphorylation by protein kinase A

II

I and IV

I, III, V, VI, and VII

I, IV, and VII

Correct Answer: (b) I and IV

Glycogenolysis: It is the process by which glycogen stored in liver and muscle cells, break down to form glucose.