The C-terminus of a polypeptide always contains

Question

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The C-terminus of a polypeptide always contains a carboxyl group (-COOH). This is because the carboxyl group is located at the end of the polypeptide chain where the last amino acid has a free carboxyl group.

Answer: E 
 The C-terminus of a polypeptide chain always ends with a specific amino acid called a stop amino acid, which is also known as a termination codon. This stop amino acid signals the end of the protein synthesis process by telling the ribosomes to stop translating the mRNA template.

The C-Terminus of a Polypeptide Always Contains