Three Major Classes of cell surface receptors

Question 1

Ion Channel coupled receptors

Answer 1

movement of ions in and out of cells in response to signal

Question 2

Enzyme coupled receptors

Answer 2

No intermediate interacts between receptor protein and enzyme; acts as a dimer;

Question 3

G-protein coupled receptors

Answer 3

traverses membrane multiple times; interacts w/ g-protein; g-protein acts as an intermediate relaying message to enzyme.