Student Name:___

Permanent Number:_____

Part A. True or False (1 mark each):

As indicated on your Parscore sheets, fill in A for True or B for False.

1. The efficacy of an agonist is determined in large part by the number of available or "active" receptors with which to bind. TRUE!

2. The Ras-Raf-MAP kinase pathway is activated upon stimulation of receptor tyrosine phosphatases. FALSE! (kinase, Trk-Rs)

3. Intracellular signaling through Gq-coupled receptors does not involve direct activation of second messenger systems. TRUE! ? (PLC-BETA ? PI(4,5)P2 ? DAG/IP3 ? then Ca2.... PKC)

Multiple Choice Answers (1 mark each):

You are to select the BEST of the lettered alternatives provided for each question. Fill in the appropriate...