Bacteriorhodopsin MCQ

Test your knowledge with important Bacteriorhodopsin MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Bacteriorhodopsin MCQs at Bissoy

• After photoisomerization of the retinal molecule, which amino acid residue becomes a proton acceptor of the donor proton from the retinal molecule?
  ক

  Met69

  খ

  Ala93

  গ

  Lys216

  ঘ

  Asp85
• Which of the following conformation is showed by retinal after absorbing light?
  ক

  Bent trans

  খ

  Straight cis

  গ

  Straight trans

  ঘ

  Bent cis
• Which of the following bacterium is prominently known to contain bacteriorhodopsin?
  ক

  Aspergillus niger

  খ

  Entamoeba histolytica

  গ

  Escherichia coli

  ঘ

  Halobacterium salinarum
• The function of rhodopsin and bacteriorhodopsin is the same.
  ক

  True

  খ

  False
• What is the absorption maximum of bacteriorhodopsin?
  ক

  448 nm

  খ

  706 nm

  গ

  346 nm

  ঘ

  568 nm
• Which of the following is true for the cytoplasm of Halobacteria?
  ক

  It has fewer protons

  খ

  It is neutral

  গ

  It is highly acidic

  ঘ

  It is highly alkaline
• Which of the light powers the pumping of the protons across the membrane via bacteriorhodopsin?
  ক

  Infrared light

  খ

  Red light

  গ

  Ultraviolet light

  ঘ

  Greenlight
• Which of the following conformation is showed by retinal before absorbing light?
  ক

  Bent trans

  খ

  Bent cis

  গ

  Straight cis

  ঘ

  Straight trans
• Which of the following is true for bacteriorhodopsin?
  ক

  It is an extrinsic protein

  খ

  It is a lipid-anchored protein

  গ

  It is a peripheral protein

  ঘ

  It is an integral membrane protein
• The interaction of retinal with the helix G is of which type?
  ক

  Hydrophobic interaction

  খ

  Non-covalent interaction

  গ

  Hydrophobic interaction

  ঘ

  Covalent interaction
• How many transmembrane segments are present in the structure of bacteriorhodopsin?
  ক

  Nine transmembrane helices

  খ

  Eight transmembrane helices

  গ

  Six transmembrane helices

  ঘ

  Seven transmembrane helices
• Bacteriorhodopsin acts as a proton pump.
  ক

  False

  খ

  True
• The expression of bacteriorhodopsin is especially shown by which of the following organisms?
  ক

  Mammals

  খ

  Animals

  গ

  Birds

  ঘ

  Halobacteria
• Bacteriorhodopsins contain which of the following pigments?
  ক

  Chlorophyll

  খ

  Phycobilins

  গ

  Xanthophylls

  ঘ

  Retinal
• Which of the following protein can capture light energy?
  ক

  Glycophorin

  খ

  GLUT 1

  গ

  T cell receptor

  ঘ

  Bacteriorhodopsin