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Which of these is the smallest structure? A. Polypeptide B. Amino acid C. Dipeptide D. Protein
Amino acid is the smallest structure. The answer is letter B. Think of it this way - all the structures you mentioned are made up of amino acids. Dipeptide (di = two) is a small molecule made up of two amino acids. [ Polypeptides, as you mentioned, are a chain of many amino acids (poly = many). The term protein is pretty much interchangeable with the term polypeptide (until you get deeper into
your biochemistry, they can essentially be considered the same thing). So therefore amino acids are the basic building block of all those other structures, so they have to be the smallest. ]
Expert answered|gab08|Points 112|
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Asked 8/1/2013 11:22:25 PM
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