Ch5_Biomolecules - Chapter 5 biomolecules 5 major classes...

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1 Chapter 5: biomolecules 5 major classes – Carbohydrates – Proteins – Nucleic acids – Lipids – Small molecules Formation of polymers – Polymers – Monomers; dimers, etc. – Condensation reactions (in biochemistry) coupling (synthesis) by dehydration can be reversed by hydrolysis – An immense number of polymers can be made from a limited set of monomers Carbohydrates (saccharides) Sugars; Structural, nutritive, storage Typically a hydrate of carbon: – C 6 H 12 O 6 , or (CH 2 O) 6 Usually asymmetric (“optically active”) Notation is complex: – ketose vs aldose – number of carbons Monosaccharides , particularly glucose, are the major fuel for cellular work. Also the raw material for synthesis of other monomers: amino acids, fatty acids. Almost always cyclize to form rings.
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