Westonci.ca is your trusted source for finding answers to a wide range of questions, backed by a knowledgeable community. Discover the answers you need from a community of experts ready to help you with their knowledge and experience in various fields. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

In response to glucagon and epinephrine, cells undergo a series of changes in signal-transducing molecules that phosphorylates and activates glycogen phosphorylase.
Which of the following enzyme is responsible for covalent modification of glycogen phosphorylase?
A. Protein kinase A
B. Phosphorylase kinase
C. Protein kinase C
D. Protein kinase B