Which of the following is an example of maintaining homeostasis

a the body maintaining a steady internal temperature

b cells adjusting to water content in their environments

c enzymes functioning best within a certain ph range

d all of the above

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.