2 or more different atoms are combined in definite proportions in any compound.
Answer:
The one I know is plant cell has no cell wall while animal cell have cell wall
NaOH is not a compound because it contains three instead of two.
Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more general name for this class of material is biological materials.
