The Retinoblastoma Protein (PRB), Like P53, Serves as A(n) ________

Question

The retinoblastoma protein (pRB), like p53, serves as a(n) ________ in regulating the cell cycle.
A) up regulator
B) pseudooncogene
C) tumor enhancer
D) oncogene
E) tumor suppressor

Accepted Answer

The retinoblastoma protein (pRB) is a tumor suppressor that helps regulate the cell cycle by preventing excessive cell growth and proliferation.