In studying a particular biomolecule (protein, nucleic acid, carbohydrate, lipid), a biochemist needs to separate/ purify it from other biomolecules in the sample. However, looking at the monomeric subunits of a biomolecule, one should have an idea about the characteristics of the molecule that would allow to separate/purify it from other molecules. On what basis can you separate: a. amino acids from fatty acids? b. nudleotides from glucose?

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