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Topic Question Set

Q 11 :    

The α-Helix and β-pleated sheet structures of protein are associated with its:                [2025]

  • quaternary structure

     

  • primary structure

     

  • secondary structure

     

  • tertiary structure

     

(3)

The secondary structure of protein refers to the shape in which a long polypeptide chain can exist. They are found to exist in two different types of structures viz. α-helix and β-pleated sheet structure. These structures arise due to the regular folding of the backbone of the polypeptide chain due to hydrogen bonding between –CO– and –NH– groups of the peptide bond.

 

Q 12 :    

Identify the essential amino acids from below:                         [2025]

(A) Valine
(B) Proline
(C) Lysine
(D) Threonine
(E) Tyrosine

Choose the correct answer from the options given below:

  • (A), (C) and (D) only

     

  • (C), (D) and (E) only

     

  • (B), (C) and (E) only

     

  • (A), (C) and (E) only

     

(1)