Which one of these is biotic?
a. water
b. temperature
c. beeswax
d. snow

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

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.

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin