Problem:
Question 1: list the necessary steps from the reception of an extracellular signal to the production of cAMP in signal transduction. Be sure to use specific names.
Quetion 2: The receptor tyrosine kinase(RTK) is inactive as a monomer. What happens as this receptor is activated? Be specific. Briefly explain why this receptor is capable of activating multiple pathways whereas G-proteins can only activate one pathway. What would happen if the tyrosine were replaced by arginines in the receptor?
Please read both the questions carefully and answer them.