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Questions and Answers
Which type of immunity involves antibodies neutralizing virus infectivity by preventing attachment to host cell receptors?
Which type of immunity involves antibodies neutralizing virus infectivity by preventing attachment to host cell receptors?
- Phagocytosis
- Humoral immunity (correct)
- Interferons
- Cell mediated immunity
In which type of infection does IgA neutralize virus infectivity at mucosal surfaces?
In which type of infection does IgA neutralize virus infectivity at mucosal surfaces?
- Enterovirus
- Rubella
- Measles
- Influenza (correct)
Which type of immunity requires the induction of cell mediated cytotoxicity mediated by cytotoxic T cells or NK cells?
Which type of immunity requires the induction of cell mediated cytotoxicity mediated by cytotoxic T cells or NK cells?
- Humoral immunity
- Innate immunity
- Adaptive immunity
- Cell mediated immunity (correct)
Which process involves the direct killing of virus-infected cells by cytotoxic T cells?
Which process involves the direct killing of virus-infected cells by cytotoxic T cells?
Which type of antibodies can neutralize viruses that pass through the bloodstream before reaching target organs?
Which type of antibodies can neutralize viruses that pass through the bloodstream before reaching target organs?
Which component is mainly effective on enveloped viruses by complement-mediated lysis?
Which component is mainly effective on enveloped viruses by complement-mediated lysis?
What is the function of bacteriophage tail fibers?
What is the function of bacteriophage tail fibers?
During which phase of the lytic cycle does specific adsorption occur between the phage tail fibers and a receptor site on bacteria?
During which phase of the lytic cycle does specific adsorption occur between the phage tail fibers and a receptor site on bacteria?
What is the composition of a bacteriophage head?
What is the composition of a bacteriophage head?
What happens during the eclipse phase of phage replication?
What happens during the eclipse phase of phage replication?
In bacteriophage replication, what occurs after adsorption and before penetration?
In bacteriophage replication, what occurs after adsorption and before penetration?
Which step in the lytic cycle determines the sensitivity of bacteria to different phages?
Which step in the lytic cycle determines the sensitivity of bacteria to different phages?
What is a syncytium?
What is a syncytium?
Which feature is a characteristic histological feature in virus-infected cells?
Which feature is a characteristic histological feature in virus-infected cells?
What is pathognomonic for rabies in nerve cells?
What is pathognomonic for rabies in nerve cells?
Which type of viruses induce new antigens on the cell surface?
Which type of viruses induce new antigens on the cell surface?
What do viruses like measles and mumps cause to the chromosomes of host cells?
What do viruses like measles and mumps cause to the chromosomes of host cells?
What is a multinucleate cell that can result from multiple cell fusions?
What is a multinucleate cell that can result from multiple cell fusions?
What can be seen in the electron microscope if the antibody is homologous to the virus?
What can be seen in the electron microscope if the antibody is homologous to the virus?
Which procedure is used for fluorescent antibody staining of the virus in infected cells?
Which procedure is used for fluorescent antibody staining of the virus in infected cells?
What can be detected and identified by direct microscopic examination of clinical specimens?
What can be detected and identified by direct microscopic examination of clinical specimens?
Which antibody presence can be used to diagnose current viral infection?
Which antibody presence can be used to diagnose current viral infection?
What is increasingly becoming the 'gold standard' in viral diagnosis?
What is increasingly becoming the 'gold standard' in viral diagnosis?
Why can't the presence of IgG antibodies be used to diagnose current viral infection?
Why can't the presence of IgG antibodies be used to diagnose current viral infection?
Which technique is used to detect enteroviruses by neutralizing viral infectivity?
Which technique is used to detect enteroviruses by neutralizing viral infectivity?
What is the purpose of Hemagglutination Inhibition technique in virus detection?
What is the purpose of Hemagglutination Inhibition technique in virus detection?
In Enzyme-Linked Immunosorbent Assay, what is bound to the surface to identify viruses in the patient's specimen?
In Enzyme-Linked Immunosorbent Assay, what is bound to the surface to identify viruses in the patient's specimen?
Which technique involves observing apple-green color under ultraviolet microscopy to detect infected cells?
Which technique involves observing apple-green color under ultraviolet microscopy to detect infected cells?
What happens if the antigen and known antibody are homologous in Complement Fixation technique?
What happens if the antigen and known antibody are homologous in Complement Fixation technique?
Why does Neutralization technique prevent viral infectivity?
Why does Neutralization technique prevent viral infectivity?
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