Asked in PMC Practice Test 14 (2021) 2021Moderate

Protein contains _.

Correct answer: B. Peptide bonds

  • A. Inorganic bonds
  • B. Peptide bonds
  • C. Glucosidic bonds
  • D. Covalent bonds

Explanation

The basic unit of protein are amino acids. There are approximately 20 types of amino acids found in our body. These amino acids are linked together via peptide bonds. Peptide bond between two amino acids are formed between the carbon of the carboxylic acid group and the nitrogen of the amino group by the removal of water. The sequence of amino acid, controls the type of protein made.

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About Proteins

Proteins are polymers of amino acids joined by peptide bonds, and their function depends on primary, secondary, tertiary and quaternary structure. The topic covers fibrous and globular proteins, enzymes, antibodies, hormones and transport proteins, as well as denaturation by heat or extreme pH.

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