Energy comes in different forms.

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.

Acommon kind of mechanical weathering is called

Dna replication or repair occurs in a cell in all of thw following situations except when