Answer to Question #171625 in Biochemistry for Edwin L.

Question #171625

Glycogenolysis

1) What is glycogen? Where is it stored?

2) Glucagon, a hormone found in the pancreas, stimulates what enzyme found only in the liver and not in skeletal muscles? Identify the two pathways where this enzyme is used.

3) In the reaction: glycogen to glu-1-phosphate, what reaction is involved? Name the enzyme.

4) In the reaction: glu-1-phosphate to glu-6-phosphate, what reaction is involved? Name the enzyme. Identify the two pathways where this enzyme is used.

5) In the reaction: glu-6-phosphate to glucose. What reaction is involved? Name the enzyme. Identify the two pathways where this enzyme is used.

 

Glycogenesis

6) In the reaction: glucose to glu-6-phosphate, what reaction is involved? Name the enzyme. Identify the two pathways where this enzyme is used.


1
Expert's answer
2021-03-15T07:43:23-0400

(1)Glycogen is a polysaccharide of glucose formed on hydrolysis.

Glycogen is stored in the liver.

(2) Enzyme glycogen.

It stimulates glycogenolysis.

It catalysis the breakdown of the glycogen polymer.

(3) glycogenolysis reaction.

Enzyme glycogen phosphorylase

The enzyme breaks down glycogen.

It also performs a catalytic function.

(4) Glycogenosis reaction

Enzyme phosphoglucomutase

The enzyme breakdown glucose.

It also synthesis glucose.

(5) Glycolysis reaction

Enzyme phosphofructokinase.

The enzyme regulates the process of fermentation,

It also performs a catalytic function.

(6) Gluconeogenesis reaction

Enzyme hexokinase

The enzyme performs regulatory roles.

It also performs a catalytic function.


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