Question

Choose correct answers: What determines the effect of a signal (like acetylcholine, or adrenaline) on a cell

Question 9 options:

A	presence of a receptor on the cell
B	are often bound by peptide signals like insulin
C	act as G coupled proteins
D	association with downstream intracellular signaling cascades
E	always found in the nucleus
F	are likely to have effects within seconds
G	other proteins the cell expresses that could be influenced by the downstream cascade

Answer 1

Answer :

Correct choices are A C D F

Adrenaline and epinephrine are the same.

There is an adrenaline receptor in cells. Its situated in plasma membrane.

The receptors are coupled with g protein.

Receptor reception turns ATP to cAMP. This is by adenylate cyclase.

This activates protein kinase A. Which inturn activate phosphorylase kinase.

This activate glycogen phosphorylase.

Which convert glycogen to glucose.

There is a cascade of down stream reactions.

It has opposite action of insulin. Cause gluconeogenesis. In coupling with glucagon.

They causes fast effects. Receptors are located in plasma membrane and signal cascade in cytoplasm.