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MCQs

Total Questions : 91 | Page 6 of 10 pages
Question 51. Which of the following is covalently attached to a lipid molecule in cell membrane?
  1.    Integral protein
  2.    Transmembrane protein
  3.    Peripheral protein
  4.    Lipid-anchored protein
 Discuss Question
Answer: Option D. -> Lipid-anchored protein
Answer: (d).Lipid-anchored protein
Question 52. Integral proteins are also known as ____________
  1.    Intrinsic proteins
  2.    Glycosylated proteins
  3.    Transmembrane proteins
  4.    Bilayer proteins
 Discuss Question
Answer: Option C. -> Transmembrane proteins
Answer: (c).Transmembrane proteins
Question 53. Hydropathy plot helps to _______________
  1.    Identify hydrophobic amino acids
  2.    Determine arrangement of amino acids in a transmembrane protein
  3.    Provides an average hydrophobicity of short peptide segments
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 54. Transmembrane domain of a transmembrane protein is present as _______________
  1.    Alpha-helix
  2.    Beta-sheet
  3.    Triple beta-sheet
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Alpha-helix
Answer: (a).Alpha-helix
Question 55. The concept of transmembrane proteins was obtained from the results of which technique?
  1.    Freeze-fraction replication
  2.    Freeze-fracture replication
  3.    Fraction replication
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Freeze-fracture replication
Answer: (b).Freeze-fracture replication
Question 56. Facilitative transporter ___________
  1.    Helps in facilitated diffusion
  2.    Changes conformation
  3.    Transports molecules passively
  4.    Changes conformation, transports molecules and facilitated diffusion
 Discuss Question
Answer: Option D. -> Changes conformation, transports molecules and facilitated diffusion
Answer: (d).Changes conformation, transports molecules and facilitated diffusion
Question 57. GLUT1 is an example of ______________
  1.    Channel protein
  2.    Facilitative transporter
  3.    Active transporter
  4.    Lipid-anchored protein
 Discuss Question
Answer: Option B. -> Facilitative transporter
Answer: (b).Facilitative transporter
Question 58. Halobacterium salinarium uses the following for the active transport of ions to induce purple colour.
  1.    Light energy
  2.    ATP
  3.    Voltage
  4.    Chemical energy
 Discuss Question
Answer: Option A. -> Light energy
Answer: (a).Light energy
Question 59. Symport and Antiport is the classification of ____________
  1.    Primary active transport
  2.    Secondary active transport
  3.    Primary passive transport
  4.    Secondary passive transport
 Discuss Question
Answer: Option B. -> Secondary active transport
Answer: (b).Secondary active transport
Question 60. The ratio of Na⁺ and K⁺ transported by Na⁺/K⁺-ATPase pump is ___________
  1.    1:1
  2.    2:1
  3.    2:3
  4.    3:2
 Discuss Question
Answer: Option D. -> 3:2
Answer: (d).3:2

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