Question

A tetrapeptide possesses _____ peptide bonds and can be ______ into amino acids fragments

• A. hydrolysed
• B. hydrolysed
• C. denatured
• D. denatured

Answer 1

Answer: (A)

hydrolysed

Answer 2

A tetrapeptide is composed of four amino acids. When amino acids are joined together through peptide bonds, the number of peptide bonds will always be one less than the number of amino acids. This is because each bond connects two amino acids.
1. For a dipeptide (two amino acids), there is 1 peptide bond.
2. For a tripeptide (three amino acids), there are 2 peptide bonds.
3. For a tetrapeptide (four amino acids), there are 3 peptide bonds.
Furthermore, peptide bonds can be broken down through hydrolysis. Denaturation typically refers to the loss of the three-dimensional structure of proteins (like when an egg is fried), but it doesn't break the peptide bonds.
So, the correct answer is: hydrolysed