The main function of the human digestive system is to * a. Rid the body of cellular waste materials
b. Process organic molecules so they can enter cells
c. Break down glucose in order to release energy
d. Change amino acids into proteins and carbohydrates

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.