Structure and Properties of Amino Acids

Q1: What is the heaviest of the twenty amino acids?

A Phenylalanine

B Tryptophan

C Tyrosine

D Histidine

ANS:B - Tryptophan

Molecular masses:

Tryptophan 204.

Phenylalanine 165.

Tyrosin 181.

Histidine 155.



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