Role of Calcium MCQ

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• Calmodulin has low affinity for _____________
  ক

  magnesium ions

  খ

  iodine

  গ

  non-stimulated cells

  ঘ

  stimulated cells
• Which of the following is a calcium-binding protein?
  ক

  cyclin

  খ

  calmodulin

  গ

  renin

  ঘ

  kinetin
• Which ions activate cyclin-dependent kinases, following fertilization?
  ক

  Ca2+

  খ

  Mg2+

  গ

  Fe3+

  ঘ

  H+
• Which receptors open up during the calcium-induced calcium release?
  ক

  Ryanodine receptors

  খ

  IP3 receptors

  গ

  ligand-gated channels

  ঘ

  C2H2 receptors
• Ryanodine is a _______________
  ক

  protein

  খ

  bacteria

  গ

  alkaloid

  ঘ

  steroid
• How many types of calcium ion channels are present on ER membrane?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• Upon fertilization, a wave of calcium release is observed throughout the cell.
  ক

  True

  খ

  False
• Fura-2 is an example of __________________
  ক

  fluorescent molecule

  খ

  cell surface receptor

  গ

  cell surface antigen

  ঘ

  oncogene
• Calcium acts as an intracellular messenger.
  ক

  True

  খ

  False
• Abnormal elevation of cytosolic Calcium can occur following a _____________
  ক

  stroke

  খ

  conception

  গ

  tumor

  ঘ

  epilepsy
• The concentration of Calcium in a resting cell is ___________
  ক

  10 M

  খ

  10-2 M

  গ

  10-5 M

  ঘ

  10-7 M