Question

During glycogenolysis, glycogen is broken down and converted to glucose-6-phosphate, which can enter glycolysis or be used by the liver to raise blood glucose levels. Complete the following sentences describing glycogen breakdown. Move the appropriate term to each blank. Some terms will be used more than once, and two terms will not be used at all.1. The enzyme ________ removes terminal glucose residues from glycogen by cleaving ________ linkages.2. Enzyme activity stops when the enzyme reaches a point _______ glucose residues from a branch point, which is a(n) ________ linkage.3. The ________ of the debranching enzymes moves three glucose residues to another branch, connecting them by a(n) ________ linkage.4. The ________ activity of the debranching enzyme removes the glucose at its ________ linkage.5. The enzyme ________ continues removing terminal glucose residue

Answer 1

1. The enzyme glycogen phosphorylase removes terminal glucose residues from glycogen by cleavinα(1,4) linkages.

2. Enzyme activity stops when the enzyme reaches a point four glucose residues from a branch point, which is an α(1,6) linkage

3. The transferase activity of the debranching enzymes moves three glucose residues to another branch, connecting them by an α(1,4) linkage

4. The glucosidase activity of the debranching enzyme removes the glucose at its α(1,6) linkage

5. The enzyme glycogen phosphorylase continues removing terminal glucose residue  

Explanation:

Several enzymes are required for the breakdown of a glycogen molecule to a glucose-6-phosphate molecule through glycogenolysis. These enzymes are completely responsible for degrading the glycogen, remodeling the glycogen and converting the glycogen. This is a regulatory process which takes place where is glucose lack or to accelerate fluid. The main enzymes that take part in this glycogen pathway are glycogen phosphorylase and the degrading enzyme.