Complement System MCQ

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

• In alternative pathway, C3b forms the complex with__________
  ক

  Factor D

  খ

  Factor B

  গ

  C3a

  ঘ

  Properdine
• In alternative pathway, why is the C3b deposition more?
  ক

  Because of spontaneous hydrolysis of C3

  খ

  Because of catalysis of C3

  গ

  Because of conformational change of C3

  ঘ

  Because of convertase property of C3
• What are all the smaller fragments that are formed in the classical pathway responsible for?
  ক

  MAC formation

  খ

  Inflammatory reactions

  গ

  To act as convertases

  ঘ

  To polymerase C9
• The protein which catalyzes the proteolytic cleavage of the complement proteins is called_________
  ক

  A convertase

  খ

  A protease

  গ

  A complement enzyme

  ঘ

  A complement cleavase
• C3 hydrolysis plays an important role in all the three pathways. True/False?
  ক

  True

  খ

  False
• C4b2a BAR is called as _________
  ক

  C3 convertase

  খ

  C4 convertase

  গ

  C2 convertase

  ঘ

  C5 convertase
• C1r and C1s have enzymatic activities because _________
  ক

  Of the conformational changes

  খ

  Of the binding capacity

  গ

  It can form complex

  ঘ

  It is a complement protein
• In classical pathway, the head of the C1q interacts with the _______ domain of Fc of the antibody.
  ক

  CH1

  খ

  CH2

  গ

  CH3

  ঘ

  Hinge Region
• Which of the following pathways come under innate immunity?
  ক

  Classical pathway

  খ

  MB-Lectin pathway

  গ

  Alternative pathway

  ঘ

  Both Alternative and MB-Lectin pathways
• Which of the following pathways come under adaptive immunity?
  ক

  Classical pathway

  খ

  MB-Lectin pathway

  গ

  Alternative pathway

  ঘ

  Both Alternative and MB-Lectin pathways