Glycogen Metabolism

Question 1

Glucose is converted to lactate in which type of muscle fiber?

Answer 1

White, fast twitch muscle fibers

Question 2

Rate limiting enzyme for Glycogen synthesis

Answer 2

Glycogen synthase

Question 3

Activates glycogen synthase in the liver; inhibits glycogen synthase in the liver

Answer 3

Insulin; glucagon and epinephrine

Question 4

Activates glycogen synthase in skeletal muscle; inhibits glycogen synthase in skeletal muscle

Answer 4

Insulin; Epinephrine

Question 5

Type of bond made my glycogen synthase

Answer 5

alpha 1,4 glycosidic bonds (straight chains)

Question 6

Type of bond made by branching enzyme

Answer 6

glycosyl alpha 1,4: alpha 1,6 transferase

Question 7

Rate limiting enzyme of glycogenolysis

Answer 7

Glycogen phosphorylase

Question 8

Activates glycogen phosphorylase in the liver; inhibits glycogen phosphorylase in the liver

Answer 8

Glucagon and epinephrine ; insulin

Question 9

Activates glycogen phosphorylase in skeletal muscle; inhibits glycogen phosphorylase in skeletal muscle

Answer 9

epinephrine, Ca2+, AMP ; insulin and ATP

Question 10

Type of bond broken by debranching enzyme

Answer 10

alpha 1,4 and alpha 1,6 bonds