Which sentence is correct for the structure of $Hb$ (Hemoglobin)?
- A$3$ - $\alpha$ chain, $3$ - $\beta$ chain
- B$3$ - $\alpha$ chain, $1$ - $\beta$ chain
- C$2$ - $\alpha$ chain, $2$ - $\beta$ chain
- D$4$ - $\alpha$ chain, $4$ - $\beta$ chain
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The bond $-CO-NH-$ is known as ..........
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Column $X$ Column $Y$ $(1)$ Primary protein $(P)$ Globular or fibrous form $(2)$ Secondary protein $(Q)$ Three-dimensional arrangement of a single polypeptide chain $(3)$ Tertiary protein $(R)$ Gene-controlled $(4)$ Quaternary protein $(S)$ Helical or pleated sheet form
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| $(3)$ Tertiary protein | $(R)$ Gene-controlled |
| $(4)$ Quaternary protein | $(S)$ Helical or pleated sheet form |
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