How does density affect behavior at plate boundaries

All eukaryotic cells contain small bodies called

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

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.