Question

______ code for proteins that promote the cell cycle and prevent apoptosis.

Proto-oncogenes
Tumor Suppressor Genes
Cell-cycle inhibiting genes
Suppressor Proteins
All of the Above

Answer 1

Tumor suppressor genes code for proteins that prevent uncontrolled cell division by signaling potential problems with DNA and stopping the cell from dividing or causing it to die if damaged beyond repair. Examples of tumor suppressor genes include Rb, p53, and p21.

Step-by-step explanation:

Tumor suppressor genes code for negative regulator proteins that prevent uncontrolled cell division. They send stop signals during the cell cycle, signaling potential problems with DNA and stopping the cell from dividing or causing the cell to die if it is damaged beyond repair. Tumor suppressor proteins also signal a sufficient surrounding cellular density, which indicates that the cell does not need to divide. Examples of tumor suppressor genes include Rb, p53, and p21.