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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.

The Quaternary structure of a protein is :

  its structure resulting from hydrogen bonds between the C=O and N-H groups of different amino acids.

  its structure resulting from the union of more than one protein molecule, called subunit proteins.

  its structure resulting from interactions between amino acid side chains.

  its amino acid sequence

  Half-n-half Clue
 

2.

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

  proteinoids

  proteomes

  Prions

  exteins

  Half-n-half Clue
 

3.

Which of the following amino acids is polar ?

  Isoleucine

  Leucine

  Histidine

  Valine

  Half-n-half Clue
 

4.

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

  secondary structure

  tertiary structure

  primary structure

  Quaternary structure

  Half-n-half Clue
 

5.

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

  peptide bonds

  N-glycosidic bonds

  phosphodiester bonds

  interprotamine disulfide bonds

  Half-n-half Clue
 

6.

How many different amino acids are found in proteins ?

  30

  infinite

  27

  20

  Half-n-half Clue
 

7.

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

  Turns

  third level folding to form small globules

  â-pleated sheet

  á-helix

  Half-n-half Clue
 


 
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