Which of the following best describes microbial antagonism?
Group of answer choices
the presence of resident bacteria on the surface of the body and their ability to produce defensins
the presence of pathogens on the surface of the skin, which will invade the body through abrasions
the presence of normal microbiota that protect the body by competing with pathogens in a variety of ways to prevent pathogens from invading the body
the ability of microbiota to mutate into pathogens
the presence of normal microbiota that can become pathogens under certain conditions
2-
Membrane attack complexes (MAC) are:
Group of answer choices
able to degrade peptidoglycan in cell walls and so cause bacterial cell lysis
the end result of the classical, alternative and lectin complement pathways
the initial trigger for the lectin complement system
made up of complement components C1, C2, C3, C4, C5a, C6, C7, C8, & C9
used by Natural Killer cells to insert into target cell membranes and kill targets