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The Protein Quiz

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. 1
2. 2
3. 3
4. 4