Innate/nonspecific/natural immunity MCQ 11+

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• Non-specific host defenses against viral infection are
  ক

  Natural killer cells (NK cell

  খ

  Interferons

  গ

  IgM

  ঘ

  Anti-viral drugs

  ঙ

  IgG
• Natural killer cells have the ability to destroy
  ক

  Irreversibly stressed cells

  খ

  Virus-infected cells

  গ

  Cancer cells

  ঘ

  Germinal center cells

  ঙ

  Senescent epithelial cells
• Followings are cell derived factors that participate in non-specific immune response
  ক

  Complement

  খ

  Interferon

  গ

  C-reactive protein

  ঘ

  Tumour Necrosis Factor (TN

  ঙ

  Lactic acid
• Innate immunity possess following features
  ক

  Present prior to exposure to the microbe

  খ

  Does not improve after exposure to organism

  গ

  Kills invading organisms and activate acquired immune response

  ঘ

  Plasma cells are the component of innate immunity

  ঙ

  Possess both short and long term memory
• Cells that are Components of innate immunity are
  ক

  Dendritic cells

  খ

  Mast cells

  গ

  Natural killer cells

  ঘ

  B lymphocytes

  ঙ

  Fibroblasts
• Characteristics of innate immunity are
  ক

  Rapid onset of action

  খ

  First and second body defenses

  গ

  Acute phase proteins play important role

  ঘ

  Long lasting immunity

  ঙ

  Immune response is specific
• Tissue fluids that act in innate immunity are
  ক

  Gastric acid

  খ

  Mucus

  গ

  Tear

  ঘ

  Saliva

  ঙ

  Pleural fluid
• Cells that play a role in innate inmunity are
  ক

  Dendritic cells

  খ

  Neutrophils

  গ

  Basophils

  ঘ

  Mast cells

  ঙ

  CD4+ T lymphocytes
• Components of the innate immune system are
  ক

  Lectin pathway of complement activation

  খ

  Natural killer cells

  গ

  Macrophages

  ঘ

  CD8 T-cells

  ঙ

  B-cells
• Natural killer cell
  ক

  It is a subset of T lymphocyte

  খ

  Kills target cell by perforin and granzyme

  গ

  Have Fc receptor for IgG

  ঘ

  Needs help of MHC protein for antigen recognition

  ঙ

  Plays role in delayed type of hypersensitivity
• Cellular components of innate immunity includes
  ক

  Follicular dendritic cell

  খ

  Macrophage

  গ

  Natural killer cell

  ঘ

  Helper T cell

  ঙ

  B cell