Question

in 250 words answer the following

1.     Explain the mechanisms of immunity that are responsible for fighting acute bacterial infections.

2.     Explain how microbes may evade the immune system.

Make sure to site 2 sources in MLA format

Answer 1

Answer 1

Innate Immunity is a form of non specific host defense against invading bacteria. It is natural or "innate" to the host, depending, in part, on genetics. .Innate immunity provides the first line of defense against invading bacteria. The skin and mucous membranes provide physical and chemical barriers to infection. The normal bacterial flora antagonize colonization of body surfaces by nonindigenous bacteria. The internal tissues invariably contain bactericidal substances. The most noteworthy antibacterial substance is the enzyme lysozyme, which is present in mucus and all bodily tissues and secretions. If these barriers are penetrated, the body contains cells that respond rapidly to the presence of the invader. Bacterial invasion is also challenged by the activation of complement in blood and tissues and the incitement of an inflammatory process which has the tendency to focus both the innate and adaptive immune defenses on the site of invasion.

Answer 2

Microorganism evade ;

Adhesion Adherence is theOne of the strategies used by microbes to evade body defenses Adherence is the enhanced ability of a microorganism to attach to a cell surface and it does not specifically cause any damage

Avoid being trapped in mucin
Avoid being trapped by secretory IgA antibody in mucosal surfaces(IgA binds and neutralize microbes )
Resist acid in the stomach by having acid resistant capsid (eg. Rotaviruses and enteroviruses)