A polypeptide (Mol. wt `= 360`) formed by glycine (Mol. wt `= 75`) amino acid. How many glycine units are used to form it.

Answer

6

Explanation

Let 'n' number of glycine are used to form polypeptide.
`(n-1).H_(2)O` molecule are eleminated to form it.
Molecular mass of `H_(2)O =18 g`
`n xx 75 -(n-1)18 - 360`
`75 n -18 n+18 =360`
`n=6`.
So `6`(six) glycine units are used to form peptide so it is hexapeptide.