Proteins: Structure and Functions · NCERT Biology

Proteins are considered to be _______ of amino acids.

  1. Homopolymers (one type)
  2. Heteropolymers (many types)
  3. Non-polymers (no chain)
  4. Dimers (two subunits)
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Correct answer: Heteropolymers (many types)

Proteins are heteropolymers because they are made up of 20 different types of amino acids. A homopolymer would contain only one type of monomer repeated many times, whereas proteins require diverse amino acids for their diverse structure and function.

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