For a second messenger to work effectively it must have the following characteristics:
Amplification - when a few hormone molecules signal the cell, it needs to respond with a signal that is strong enough to get a job done without repeated high levels of stimulation.
Control --- eventually a response must be shut down .
Specificity - when a hormone is released, a given cell should respond in a specific way.
Role of phosphodiesterase is in ...
Explanation of the second messenger system in more than 250 words is provided in the solution.