What is the difference between Ras and the G proteins bound to G protein coupled receptors (GPCRs)?
A)Ras is an enzyme and the G proteins bound to GPCRs are not enzymes.
B)Ras is a second messenger and the G proteins bound to GPCRs are not second messengers.
C)Ras is a small G protein and the G proteins bound to GPCRs are not small G proteins.
D)Ras can activate different effector molecules and the G proteins bound to GPCRs cannot activate different effector molecules.

Question

Quizplus · Accepted Answer

Ras is a small G protein, while the G proteins bound to GPCRs may or may not be small G proteins. The other choices are incorrect as both Ras and G proteins bound to GPCRs can be enzymes, second messengers, and activate different effector molecules.

What Is the Difference Between Ras and the G Proteins