In muscle tissue, the ratio of phosphorylase a to phosphorylase b determines the rate of conversion of glycogen to glucose 1‑phosphate. Classify how each event affects the rate of glycogen breakdown in isolated muscle tissue.

1. Addition of phosphorylase b kinase 

2. [ATP] exceeds [ADP] 

3. treatment with insuli

4. Ca2+ binding to phosphorylase b kinase 

5. addition of phosphatase inhibitor 

6. removal of phosphate groups from phosphorylase a 

7. end of flight-or-flight response 8. treatment with glucago

Categorize them by an increase, decrease, or no change in glycogen breakdown

Answer rating: 100% (QA)

Increased rate of glycogen breakdown Decreased rate of glycogen breakdown No change AMP allosteric b View the full answer