Which of the following statement is not correct?
Correct answer: D. The union of two amino acids produces two peptide linkages
- A. A peptide bond is CO-NH
- B. Each polypeptide has one C terminal and the other N terminal
- C. The amino acid sequence of a protein determines the function of the protein
- D. The union of two amino acids produces two peptide linkages
Explanation
A peptide linkage is an amide linkage. It is represented by -CONH-. Thus, option A is correct. Each polypeptide has one C terminal with carboxylic group and one N terminal with amino group. Thus, option B is correct. The function of the protein depends on the sequence of the amino acids. Thus, option C is correct. The union of two amino acids produces one peptide linkages.Thus, the option D is incorrect.
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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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