1) What is difference between acid and base ?

The activity of the modern sample is 1.10 bq . how long does that measurement take?

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

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.