Question

Among Receptor Tyrosine Kinases (RTKs), which statement accurately reflects their relationship with Ras activation?

A) Most RTKs activate Ras.
B) None of the RTKs activate Ras.
C) Only a few RTKs activate Ras.
D) All RTKs activate Ras equally.

Answer 1

Most RTKs activate Ras, which is crucial for regulating cell division.

Step-by-step explanation:

Among Receptor Tyrosine Kinases (RTKs), most RTKs activate Ras. The Ras protein is a G-protein that activates the MAPK kinase cascade, leading to cell proliferation and differentiation. The activation of RTKs initiates a signaling pathway that includes the G-protein RAS, which in turn, activates the MAP kinase pathway. This pathway is crucial in regulating cell division.