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MCQs

Total Questions : 76 | Page 6 of 8 pages
Question 51. Which of the following are known as helix breakers?
  1.    Proline and glycine
  2.    Isoleucine and leucine
  3.    Valine
  4.    Threonine
 Discuss Question
Answer: Option A. -> Proline and glycine
Answer: (a).Proline and glycine
Question 52. Secondary structure is defined by _________
  1.    Hydrogen bonding
  2.    Vander Waals forces
  3.    Covalent bonding
  4.    Ionic bonding
 Discuss Question
Answer: Option A. -> Hydrogen bonding
Answer: (a).Hydrogen bonding
Question 53. Which of the following is false about NMR spectroscopy?
  1.    NMR is an abbreviated form of Nuclear Magnetic Resonance
  2.    The intramolecular magnetic field around an atom in a molecule changes the resonance frequency giving structural information about the atom
  3.    The intermolecular magnetic field around an atom in a molecule changes the resonance frequency giving structural information about the atom
  4.    It is a technique that exploits magnetic properties of atomic nuclei
 Discuss Question
Answer: Option C. -> The intermolecular magnetic field around an atom in a molecule changes the resonance frequency giving structural information about the atom
Answer: (c).The intermolecular magnetic field around an atom in a molecule changes the resonance frequency giving structural information about the atom
Question 54. Which of the following is a false statement?
  1.    α-Keratin is α helical
  2.    Collagen is α helical
  3.    Hemoglobin has a quaternary structure
  4.    α-Keratin is β pleated structure
 Discuss Question
Answer: Option D. -> α-Keratin is β pleated structure
Answer: (d).α-Keratin is β pleated structure
Question 55. Which of the statements is false about multiple sequence alignment?
  1.    Both protein and nucleic acid secondary structures can be used
  2.    More useful in RNA
  3.    These alignments can be made more accurate by the inclusion of secondary structure information
  4.    A significant increase in accuracy
 Discuss Question
Answer: Option B. -> More useful in RNA
Answer: (b).More useful in RNA
Question 56. Which of the following is false?
  1.    Lysozyme has S-S linkage
  2.    Ribonuclease has S-S linkage
  3.    Heme group in cytochrome c is covalently linked to the protein on two sides
  4.    Ribonuclease has SH-SH linkage
 Discuss Question
Answer: Option D. -> Ribonuclease has SH-SH linkage
Answer: (d).Ribonuclease has SH-SH linkage
Question 57. Which of the following enzyme is secreted by the pancreas?
  1.    Ribonuclease
  2.    Lysozyme
  3.    Cytochrome c
  4.    Myoglobin
 Discuss Question
Answer: Option A. -> Ribonuclease
Answer: (a).Ribonuclease
Question 58. Which of the following is a component of mitochondria?
  1.    Ribonuclease
  2.    Lysozyme
  3.    Cytochrome c
  4.    Myoglobin
 Discuss Question
Answer: Option C. -> Cytochrome c
Answer: (c).Cytochrome c
Question 59. Which of the following serves as bactericidal agent?
  1.    Ribonuclease
  2.    Lysozyme
  3.    Cytochrome c
  4.    Myoglobin
 Discuss Question
Answer: Option B. -> Lysozyme
Answer: (b).Lysozyme
Question 60. Which of the following is false about fibrous protein?
  1.    It is in rod or wire like shape
  2.    Keratin and collagen are the best examples
  3.    Hemoglobin is the best example
  4.    It provides structural support for cells and tissues
 Discuss Question
Answer: Option C. -> Hemoglobin is the best example
Answer: (c).Hemoglobin is the best example

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