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Topic Question Set

Q 1 :    

Which of the following is a basic amino acid?           [2020]

  • Serine

     

  • Alanine

     

  • Tyrosine

     

  • Lysine

     

(4)

Lysine is a basic amino acid.

[IMAGE 347]

 

Q 2 :    

The non-essential amino acid among the following is              [2019]

  • lysine

     

  • valine

     

  • leucine

     

  • alanine

     

(4)

 

Q 3 :    

Which structure(s) of proteins remain(s) intact during denaturation process?           [2019]

  • Both secondary and tertiary structures

     

  • Primary structure only

     

  • Secondary structure only

     

  • Tertiary structure only

     

(2)

During denaturation of proteins, 2° and 3° structures are destroyed but 1° structure remains intact.

 

Q 4 :    

Which of the following compounds can form a zwitter ion?             [2018]

  • Aniline

     

  • Acetanilide

     

  • Benzoic acid

     

  • Glycine

     

(4)

HOOC-CH2Glycine-NH2 ⇌ -OOC-CH2Zwitter ion-N+H3

 

Q 5 :    

In a protein molecule various amino acids are linked together by               [2016]

  • peptide bond

     

  • dative bond

     

  • α-glycosidic bond

     

  • β-glycosidic bond

     

(1)