Causes, Smoking: K-ras

This section explains how the protein produced by the K-ras gene is a tumor �€œactivator.�€�

Educational standards - statements

  • Gene mutation in a cell can result in uncontrolled division called cancer. Exposure of cells to certain chemicals and radiation increases mutations and thus the chance of cancer.| AAAS#5C/H6
  • Cell functions are regulated. Regulation occurs both through changes in the activity of the functions performed by proteins and through the selective expression of individual genes. This regulation allows cells to respond to their environment and to control and coordinate cell growth and division.| NSES#C 1.4