Number of peptide bonds involved in stabilization of a molecule or insulin is:
Correct answer: C. 49
- A. 51
- B. 50
- C. 49
- D. 48
Explanation
The number of peptide bonds in a protein is determined by subtracting the number of polypeptide chains from the total number of amino acids. Insulin consists of 51 amino acids arranged in two polypeptide chains (A and B). Therefore, the calculation for the number of peptide bonds is 51 (total amino acids) - 2 (polypeptide chains) = 49. Option C is correct. Options A, B, and D incorrectly calculate the number of peptide bonds based on the given information.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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