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Bio molecules

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Uploaded by on May 4, 2010

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A biomolecule is any organic molecule that is produced by a living organism, including large polymeric molecules such as proteins, polysaccharides, and nucleic acids as well as small molecules such as primary metabolites, secondary metabolites, and natural products.
As organic molecules, biomolecules consist primarily of carbon and hydrogen, nitrogen, and oxygen, and, to a smaller extent, phosphorus and sulfur. Other elements sometimes are incorporated but are much less common.
•Types of Biomolecule: Small molecules:
oLipids, phospholipids, glycolipids, sterols, glycerolipids
oCarbohydrates, sugars
oVitamins
oHormones, neurotransmitters
oMetabolites
•Monomers:
oAmino acids
oNucleotides
oMonosaccharides
•Polymers:
oPeptides, oligopeptides, polypeptides, proteins
oNucleic acids, DNA, RNA
oOligosaccharides, polysaccharides (including cellulose)
oCellulose, lignin
oHemoglobin

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  • Why does milk precipitate at pH4 without carbohydrates and does not precipitate at the same pH with carbohydrates?

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