What must be true to consider something to be alive ?

How do the nuclei of covalently bonded atoms keep the bond together

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.

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?