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Quiz 1
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Q.1
Interactions between atoms within the protein chain are one of the main forces that stabilize covalent structures in Proteins.
a) True
b) False
Q.2
One of the Main Forces that stabilize covalent structures in proteins is the interaction between the protein and the ____________
a) Other protein
b) Cells around
c) Solvent
d) Cell debris around
Q.3
Salt Bridges is one of the Interactions stabilizing protein structure.
a) True
b) False
Q.4
What is the disulfide bond?
a) The ionic bond between S-S
b) Vander Waals interaction between two S atoms
c) The covalent bond between sulfur atoms on two cysteine amino acids
d) The covalent bond between any two sulfur atoms
Q.5
Which bond is weak and allow to be broken and reformed easily?
a) Disulfide bond
b) H bond
c) Hydrophobic interaction
d) Electrostatic bond
Q.6
H bond doesn’t allow structural change.
a) True
b) False
Q.7
Salt bridges are which kind of bonds?
a) Disulfide bond
b) H bond
c) Hydrophobic interaction
d) Electrostatic bond
Q.8
What is the strength of salt bridges?
a) 10-15 kcal/mol
b) 20-25 kcal/mol
c) 17-20 kcal/mol
d) 4-7 kcal/mol
Q.9
Hydrophobic interactions are attractive interactions, resulting from the inability of water to form hydrogen bonds with certain side chains.
a) True
b) False
Q.10
What is the name of attractions between polar or ionized R groups and water on the surface of the tertiary structure?
a) Disulfide bond
b) H bond
c) Hydrophilic interaction
d) Electrostatic bond
Q.11
Which of the bonds are between the polar side groups of amino acids?
a) Disulfide bond
b) Hydrogen bond
c) Hydrophobic interaction
d) Electrostatic bond
Q.12
What is the name of the links between sulfur atoms of two cysteine amino acids?
a) Disulfide bond
b) H bond
c) Hydrophobic interaction
d) Electrostatic bond
Q.13
What is the approximate strength of the interaction between atoms in a covalent bond?
a) 500 kJ/mol
b) 150 kJ/mol
c) 100 kJ/mol
d) 250 kJ/mol
Q.14
Which of the following of a protein molecule determines the strength of van der Waals force?
a) The molecular weight of the protein
b) PI of the protein
c) Number of amino acids present
d) The surface area of the molecule
Q.15
In secondary structure, the interactions of the R groups give a protein its specific three-dimensional tertiary structure.
a) True
b) False
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