6-9 Inhibitors: Wrong Again. For each of the following false statements, change the statement to make it true.

1. Glycogen phosphorylase is responsible for the breakdown of glycogen. The enzyme is converted from the inactive b form to the active a form by the removal of a phosphate group.
2. Allosteric inhibition of an enzyme occurs when the inhibitor binds to a site other than the active site of the enzyme.
3. Glycogen phosphorylase is activated by the action of phosphorylase kinase.
4. Allosteric enzymes undergo structural changes between active and inactive forms.
5. Activation of enzymes by proteolytic cleavage is a common occurrence in the digestive system.

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