Question

Name some cell responses mediated by cAMP ( in order of extracellular signal molecule, target tissue, and response)

Answer 1

cAMP mediates the fight-or-flight response in liver cells when adrenaline binds to its receptors, activating protein kinase A and controlling gene and enzyme activity.

Step-by-step explanation:

Some cell responses mediated by cAMP include:

1. Extracellular signal molecule: Adrenaline (hormone)
2. Target tissue: Liver cells
3. Response: Activates protein kinase A (PKA), leading to the fight-or-flight response

In liver cells, when adrenaline binds to its receptors, G-proteins bind to adenylate cyclase, which then produces cAMP. cAMP binds to and activates protein kinase A, initiating a cascade response that controls gene and enzyme activity, resulting in the fight-or-flight response. This is an example of a cAMP-mediated cellular response.