Which of the following is not a function of Type I Interferons? Select one: a. inhibition of IFN beta production b. binding to NK cells c. Inhibition of viral protein production d. Degradation of viral RNA e. direct killing of virus infected cells What protein does the TLR4 TIR domain bind to after TLR 4 recognizes LPS? Select one: a. TRAF6 b. IRAK4 c. IkB d. MyD88 e. IKK
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Type I interferons are a group of cytokines that play a crucial role in the innate immune response to viral infections. Their main functions include inhibiting viral replication, modulating immune cell activity, and promoting antiviral defenses. Show more…
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Which of the following about interferons IS correct? a) Interferons are small cytokine proteins that interfere with viral replication and are produced by infected host cells. b) Interferons are produced by infected host cells. c) Interferons are small cytokine proteins that interfere with viral replication. d) Virus or bacteria infecting a cell can trigger interferon production.
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Which of the following statements regarding Type I IFNs is false? They induce the synthesis of enzymes that degrade viral RNA. They have autocrine action only. Their production is regulated by transcription factors called IRFs. The Type I IFN receptor is ubiquitously expressed.
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23. How are T lymphocytes activated? A. Release of histamine during the inflammatory process triggers their activation B. Contact with exposed collagen activates helper T cells C. Through direct contact with a foreign antigen D. By interferon and antibodies E. Activation of any component of the nonspecific immune response will activate T cells 24. Which of the following is not a function of antibodies? A. Agglutination B. Neutralization C. Opsonization D. They can act as antigen receptors E. All the above are antibody functions 25. Which of the following immune cells acts as an antigen presenting cell? A. Suppressor T cell B. Cytotoxic Killer T cell C. Natural killer cell D. Macrophage E. Helper B cell 26. Which of the following statements about interferons is correct? A. The local release of interferons stimulates viral replication. B. Interferons provide humoral immunity. C. Virally infected cells release interferon as a warning to neighboring cells D. Interferons are produced by viruses. E. The release of interferons during inflammation stimulates fever.
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