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chemistry igcse acapprinted 116 · PDF 116
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Proteins
Condensation polymers
Formed from monomers of amino acids
Joined via amide links .
Amino acids are much smaller , containing amide (NH2) and Carboxylic acid (COOH) groups .
Structure of an amino acid (General)
Proteins are formed from tens to hundreds of amino acid molecules
One water molecule is released when the Carboxylic acid functional group of one amino acid and
the NH2 (amide ) group of the other amino acid combine