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Biology · BIOMOLECULES

हिन्दी

Adult human hemoglobin (Hb) molecule exhibits which level of protein structural organization, and what is its specific subunit composition?

  1. Tertiary structure consisting of a single polypeptide folded into a compact spherical conformation
  2. Quaternary structure consisting of 4 subunits (2 α-type and 2 β-type)
  3. Secondary structure composed entirely of four parallel β-pleated sheets
  4. Quaternary structure consisting of 3 subunits (1 α-type and 2 β-type)

Correct answer · Option 2

Quaternary structure consisting of 4 subunits (2 α-type and 2 β-type)

Explanation

Adult human hemoglobin consists of 4 subunits: two subunits of α type and two subunits of β type, arranged together to form a quaternary structure.
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