Question

After a meal rich in carbohydrates, which condition would NOT be expected?

Group of answer choices

a. glycogen phosphorolysis

b. decreased production of hydroxybutryate

c. decreased secretion of glucagon

d. increased activity of glucokinase

e. increased secretion of insulin

Answer 1

a. glycogen phosphorolysis.

Discussion and explanation :

When we have a carbohydrate rich diet, carbohydrate will be digested to produce glucose and this glucose will be absorbed in to portal circulation through which glucose is transported to liver.

In presence glucose, beta cells of pancreas will be stimulated to release insulin and inhibit glucagon secretion.

Released insulin will facilitate entery and utilisation of glucose in the cells. Insulin promotes glycolysis by stimulating glycolytic enzymes such as glucokinase.

Insulin promotes glycogen synthesis and inhibits glycogenolysis (glycogen phosphorolysis).

Ketone bodies like beta hydroxybutyrate are produced under condition of starvation. Glucagon stimulates ketogenenesis, while insulin inhibits ketone body synthesis.

Hence, glycogen storage (not glycogen phosphorolysis) will occur in abundance of glucose (post meal).