Ion exchange chromatography - selects proteins on the basis of charge. This can be either cationic or anionic. Hydrophobic chromatography - selects proteins on the basis of hydrophobicity. The largest will elude first followed by the smallest. Affinity chromatography - selects proteins by its ability to bind chemical groups, i.e. enzymes to substrates, ligands to receptors, antibodies to antigens.
Cells contain four families of small organic molecules.
Name them and the macromolecules formed by each. Found in chapter 2, page 43 3. ATP is utilized as a store or carrier of energy. Many energetically unfavorable reactions are driven by this energy through enzymes that directly couple the unfavorable reaction to the favorable reaction of ATP hydrolysis. Found in chapter 2, page 66 4.