Coronavirus Disease Development and Stages Quiz
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Questions and Answers

What is the purpose of the LAL assay?

  • To detect endotoxins in drugs and medical devices (correct)
  • To detect fungal infections
  • To identify protozoa and helminths
  • To test for viral toxins
  • What is a pathogenic property of fungi?

  • Production of toxins
  • Evasion of host immune system by growing inside cells
  • Production of proteases to prevent phagocytosis (correct)
  • All of the above
  • What is the cause of inflammation following eye surgery?

  • Endotoxins in the solution used in eye surgery (correct)
  • Presence of protozoa
  • Viral infection
  • Fungal infection
  • What is a type of toxin produced by Aspergillus flavus?

    <p>Aflatoxin</p> Signup and view all the answers

    How do some viruses evade host immune system?

    <p>By growing inside cells</p> Signup and view all the answers

    What is a visible effect of viral infection?

    <p>Cytopathic effects</p> Signup and view all the answers

    What are some symptoms of the 2019-nCoV?

    <p>Fever, cough, shortness of breath and difficulty breathing</p> Signup and view all the answers

    What is a necessary factor for a disease to spread?

    <p>A continual source of the disease organisms</p> Signup and view all the answers

    What do coronaviruses include?

    <p>A large family of viruses</p> Signup and view all the answers

    What is the time interval between initial infection and the first appearance of signs and symptoms?

    <p>Incubation period</p> Signup and view all the answers

    What is a characteristic of emerging infectious diseases?

    <p>They are new, increasing in incidence, or showing a potential to increase in the near future</p> Signup and view all the answers

    What is a factor that can affect susceptibility to severe disease?

    <p>All of the above</p> Signup and view all the answers

    What is the function of T-helper cells in the immune response?

    <p>Help with humoral and cellular immunity</p> Signup and view all the answers

    Which type of cells directly kill virus-infected and tumor cells?

    <p>Cytotoxic T lymphocytes</p> Signup and view all the answers

    What is the main function of B cells in the immune system?

    <p>Produce antibodies</p> Signup and view all the answers

    Which cells are considered antigen-presenting cells?

    <p>Macrophages</p> Signup and view all the answers

    What is the role of MHC glycoproteins in the immune system?

    <p>Facilitate antigen presentation</p> Signup and view all the answers

    What is the purpose of cytokines in the immune response?

    <p>Regulate immune responses</p> Signup and view all the answers

    What is the half-life of memory cells?

    <p>5 days</p> Signup and view all the answers

    What is the primary mechanism of antibody diversity?

    <p>Somatic recombination</p> Signup and view all the answers

    What is the role of T-helper cells in response to T-dependent antigens?

    <p>To activate B cells</p> Signup and view all the answers

    What is the function of opsonization by antibodies?

    <p>To mark antigens for destruction</p> Signup and view all the answers

    What is the term for the strength of the bond between antigen and antibody?

    <p>Affinity</p> Signup and view all the answers

    How do B cells respond to T-independent antigens such as polysaccharides?

    <p>They produce a weak response with no memory cells</p> Signup and view all the answers

    What determines the percentage of positive samples correctly detected by an antibody?

    <p>Polyclonal antibodies</p> Signup and view all the answers

    In monoclonal antibodies, how many epitopes are typically targeted?

    <p>One</p> Signup and view all the answers

    Which type of monoclonal antibodies are mostly human but have a mouse antigen-binding region?

    <p>Humanized MAbs</p> Signup and view all the answers

    What is the process of generating monoclonal antibodies in the laboratory known as?

    <p>Hybridoma production</p> Signup and view all the answers

    Which reaction involves the interaction of particulate antigens and antibodies?

    <p>Agglutination reaction</p> Signup and view all the answers

    Which system is NOT mentioned for the potential production of monoclonal antibodies on a large scale?

    <p>Hybridoma systems</p> Signup and view all the answers

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