An unknown black mineral must be identified as one of the minerals on this data table
which test would best provide a positive identification of the mineral?

a) fracture and special properties
b) special properties and streak
c) hardness and streak
d) fracture and hardness

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.