What are the five steps within the lifecycle of a typical virus?

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

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.

The dense layer of connective tissue that surrounds an entire skeletal muscle is the