JEE Main levelSingle correct optionDifficulty 2 of 3bm188
The tetrapeptide Gly-Ala-Ser-Val (N-terminal to C-terminal) is formed from the four free amino acids. The number of peptide bonds in it and the number of water molecules eliminated in its formation are
A4 and 4
B3 and 3
C3 and 4
D4 and 3
Answer: B
A peptide of n residues has n - 1 peptide bonds, each formed by loss of one water molecule. For n = 4 this is 3 bonds and 3 water molecules.