Functionally, G Proteins Are Classified into What Three Types

Multiple Choice

Functionally, G proteins are classified into what three types?

A) alpha, beta, and gamma
B) slow, fast, and opened or closed
C) those that affect ion channels, stimulatory G proteins, and inhibitory G proteins
D) first, second, and third messengers
E) those that affect proteins, those that affect enzymes, and those that affect specific genes