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barry barry
wrote...
Posts: 11629
11 years ago
I need help on the review question:

How many molecules of water are used up in the breakdown of a polypeptide 15 amino acids in length?

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Educator
11 years ago


A polypeptide that has fifteen amino acids is held together by fourteen peptide bonds (count the lines in diagram). One molecule of water is consumed in the breaking of a peptide bond, therefore: 1 molecule of water x number of peptide bonds or: 1 x 14 = 14 water molecules are consumed to breakdown the polypeptide.
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