What is the modern model of an atom

What do all macromolecules have in common with each other? oa. they all are formed from the same elements. ob. they all have major roles in cell membranesoc. they all act as catalysts in the body. od. they all have peptide bonds between carbon atoms.

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

Anurse administers methenamine cautiously to a client with a history of which condition?