| Front | What is the mechanism of adrenaline action? |
|---|---|
| Back | 1. Adrenaline is a hormone and is hydrophillic, therefore can't pass through cell membranes. Adrenaline binds with receptors on the surface of a liver cell to activate the enzyme adenylyl cyclase. 2. Adenylyl cyclase triggers the conversion of ATP into cAMP on the inner surface of the cell membrane in the cytoplasm. 3. This increase in cAMP levels activate specific enzymes called protein kinases, which activates other enzymes in a chain reaction to trigger the conversion of glycogen into glucose. |
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