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Protein Structure


This quiz is based on the various aspects of the structure of protein molecules and amino acids.

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Multiple choice

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1.

Each protein has a particular 3D structure which is decided by its:

  tertiary structure

  primary structure

  secondary structure

  Quaternary structure

  Half-n-half Clue
 

2.

Successive amino acids in the polypeptide chains that make up a protein are held together by :

  peptide bonds

  N-glycosidic bonds

  interprotamine disulfide bonds

  phosphodiester bonds

  Half-n-half Clue
 

3.

Which of the following is not a type of protein secondary structure ?

  â-pleated sheet

  Turns

  third level folding to form small globules

  á-helix

  Half-n-half Clue
 

4.

Which of the following amino acids is polar ?

  Isoleucine

  Leucine

  Valine

  Histidine

  Half-n-half Clue
 

5.

The sequence of different amino acids in the polypeptide chain of a protein is called its :

  Quaternary structure

  secondary structure

  tertiary structure

  primary structure

  Half-n-half Clue
 

6.

Infectious self-reproducing agents consisting only of protein, with no nucleic acids (hypothesized in 1982 by Nobel Laureate Stanley B. Prusiner) are called :

  proteomes

  exteins

  proteinoids

  Prions

  Half-n-half Clue
 

7.

Which of the following is not an aromatic amino acid ?

  Serine

  Tyrosine

  Phenylalanine

  Tryptophan

  Half-n-half Clue
 


 
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