A tyrosine kinase receptor is different from a G-protein linked receptor in that it can trigger

a. more than onepathway at the same time.
b. When both signal moleculesare in their receptor sites, the molecules form a dimer – two molecules joined together.
c. ATP is converted to ADP and the phosphate groupgets attached to the tyrosine molecules.
d. The addition of the phosphate groups / relay proteinscauses a cascade of cellular responses.