Decide whether each statement describes the life cycle of a low-mass star or a high-mass star. when a -mass star leaves the main sequence, it becomes a red giant before creating a planetary nebula and becoming a white dwarf. when a -mass star leaves the main sequence, it becomes a red supergiant before creating a supernova and becoming either a neutron star or black hole.

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.