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Please answer 1-7 Bacteria such as E. coli and Salmonella produce invasins that affect the host’s cells,...

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Biology

Please answer 1-7

  1. Bacteria such as E. coli and Salmonellaproduce invasins that affect the host’s cells, thus causing thehost cells to __________.

    release tumor necrosis factors (TNFs)

    produce iron-binding proteins

    engulf the bacterial cell

    destroy the bacterium

  1. What are interleukins and interferons?

    antibodies

    antigens

    cytokines

    bacterial toxins

  1. Which of these permanently colonize the host through most of itslife?

    normal microbiota

    transient microbiota

    alien microbiota

    none of these

  1. Which statement about nosocomial infections isfalse?

    they occur in compromised patients

    they may be caused by drug-resistant bacteria

    they are caused by microbes living inside of the medicalfacility

    the patient had the infection prior to hospitalization

  1. Endotoxins are __________.

    associated with gram-positive bacteria

    are generally more potent than exotoxins

    associated with gram-negative bacteria

    actively excreted by living cells

  1. Ergot toxin, Aflatoxin, and other types of mycotoxins areproduced by ________.

    viruses

    bacteria

    fungi

    helminthes

  1. Which of these is a portal of microbial entry into humans?

    mucous membranes

    skin

    parenteral routes   

    all of these are correct

Answer & Explanation Solved by verified expert
4.3 Ratings (948 Votes)
Bacteria such as E coli and Salmonella produce invasins that affect the hosts cells thus causing the host cells to Correct option release tumor necrosis factors TNFs This is the correct option because invasin causes host cell to induce inflammatory response by producing TNF alpha cytokine What are    See Answer
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