Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson

تمرين 12

What is the function of Ras during tyrosine kinase cell signaling
A) It activates the opening of channel-linked receptors.
B) It is an enzyme that synthesizes second messengers.
C) It links the receptor protein to the MAP kinase pathway.
D) It phosphorylates other enzymes as part of a pathway.