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Introduction
This quiz is created by Dr. Nagendra Sigh, to check the understanding of proteins of students

Q.1 Proteins are:

 * 1) hydrophobic chemicals
 * 2) polypeptides
 * 3) amino acids
 * 4) inorganic polymers

Q.2 The guanidino group containing amino acid is/are:

 * 1) Lysine
 * 2) Tryptaophan
 * 3) arginine
 * 4) Isoleucene

Q.3 example of a polar amino acid is:

 * 1) Glutamate
 * 2) Serine
 * 3) Alanine
 * 4) Methionine

Q.4 the guiding force for protein folding into tertiary level is:

 * 1) H-bonds
 * 2) Salt bridges
 * 3) hydrophobic forces
 * 4) disulphide bridges

Q.5 amino acid pair having lowest and highest pKa values:

 * 1) Lysine and arginine
 * 2) aspartate and glutamate
 * 3) aspartate and arginine
 * 4) lysine and tryptophan

Q.6 most stable secondary structure found in proteins:

 * 1) alpha helix
 * 2) beta sheets
 * 3) TIM barrel
 * 4) beta-barrel

Q.7 major force required for formation of beta- barrel structures:

 * 1) H-bonds
 * 2) van der Waal forces
 * 3) disulphide bonds
 * 4) ionic interaction

Q.8 the first crystal structure solved was for protein called:

 * 1) Lysozyme
 * 2) haemoglobin
 * 3) myoglobin
 * 4) chymotrypsin

Q.9 one of the noble prizes for 2010 was awarded for the work related to:

 * 1) Helicobactor pyrlori and acidity
 * 2) Drug discovery for H1N1 flue
 * 3) structure determination of ribosome
 * 4) vaccine development against AIDS virus

Q.10 Which amono acid pair will have least and most fraction occupied in Ramachandran plot:

 * 1) Gly and pro
 * 2) Pro and Ala
 * 3) Val and Gly
 * 4) tryptophan and Ala

Q.11 example of a serine protease is:

 * 1) phospholipases
 * 2) chymotrypsin
 * 3) myoglobin
 * 4) papain

Q.12 primary structure of a protein is govern by:

 * 1) H-bonds
 * 2) peptide bonds
 * 3) van der Waals bonds
 * 4) ionic bonds

Q.13 tertiary structure is found in:

 * 1) z-DNA
 * 2) b-DNA
 * 3) z-RNA
 * 4) t-RNA

Q.14 How many H-acceptor one water molecule can have in making H-bonds:

 * 1
 * 2
 * 3
 * 4