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MCQs

Total Questions : 130 | Page 11 of 13 pages
Question 101. Hydrophobic interactions are attractive interactions, resulting from the inability of water to form hydrogen bonds with certain side chains.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 102. What is the approximate strength of the interaction between atoms in a covalent bond?
  1.    500 kJ/mol
  2.    150 kJ/mol
  3.    100 kJ/mol
  4.    250 kJ/mol
 Discuss Question
Answer: Option D. -> 250 kJ/mol
Answer: (d).250 kJ/mol
Question 103. Which of the bonds are between the polar side groups of amino acids?
  1.    Disulfide bond
  2.    Hydrogen bond
  3.    Hydrophobic interaction
  4.    Electrostatic bond
 Discuss Question
Answer: Option B. -> Hydrogen bond
Answer: (b).Hydrogen bond
Question 104. What is the name of attractions between polar or ionized R groups and water on the surface of the tertiary structure?
  1.    Disulfide bond
  2.    H bond
  3.    Hydrophilic interaction
  4.    Electrostatic bond
 Discuss Question
Answer: Option C. -> Hydrophilic interaction
Answer: (c).Hydrophilic interaction
Question 105. What is the name of the links between sulfur atoms of two cysteine amino acids?
  1.    Disulfide bond
  2.    H bond
  3.    Hydrophobic interaction
  4.    Electrostatic bond
 Discuss Question
Answer: Option A. -> Disulfide bond
Answer: (a).Disulfide bond
Question 106. Which of the following of a protein molecule determines the strength of van der Waals force?
  1.    The molecular weight of the protein
  2.    PI of the protein
  3.    Number of amino acids present
  4.    The surface area of the molecule
 Discuss Question
Answer: Option D. -> The surface area of the molecule
Answer: (d).The surface area of the molecule
Question 107. What is the name of the bond which is caused by changes in electron density?
  1.    Vander Waals force
  2.    H bond
  3.    Hydrophobic interaction
  4.    Electrostatic bond
 Discuss Question
Answer: Option A. -> Vander Waals force
Answer: (a).Vander Waals force
Question 108. Van der Waals forces are the only attractive forces present in nonpolar compounds.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 109. Which of the following is a characteristic of the secondary structure of a protein?
  1.    Amino acid sequence
  2.    Association of secondary structure
  3.    Alpha helix and beta sheets
  4.    Association of polypeptides
 Discuss Question
Answer: Option C. -> Alpha helix and beta sheets
Answer: (c).Alpha helix and beta sheets
Question 110. In secondary structure, the interactions of the R groups give a protein its specific three-dimensional tertiary structure.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False

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