Which Statement About the Abnormal Form of the Ras Protein

Multiple Choice

Which statement about the abnormal form of the ras protein found in some cancer cells is true?

A) Because it is inactive, it is unable to inhibit growth factors.
B) It is always active because it is continuously bound to GTP.
C) If it were inhibited, cells would continue to divide.
D) It acts as an ion channel receptor.
E) It directly stimulates epinephrine production.