Bio3_ Chapter 13 Evolution and Diversity Among Microbes flashcards _ Quizlet

Peo p leco n tractth eb ird flu fro m th ean imals wh

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Unformatted text preview: te b lo o d cells an d th e immu n e sy stem co llap ses. If b ird flu can n o t cro ss in fect h u man s, h o w d o es th e v iru s so meh o w g ain th is ab ility ? Mu tate rap id ly to in fect p ig s o r o th er an imals. Peo p le co n tract th e b ird flu fro m th e an imals. Wh ere d o an tib io tics co me fro m? Wh y d o th ey so q u ick ly lo se th eir effectiv en ess? An tib io tics are d eriv ed fro m b acteria. Ex cessiv e u se in med icin e an d ag ricu ltu re h as mad e sev eral p ath o g en ic b acteria resistan t to ev ery k n o wn an tib io tic an d in fectio n s cau sed b y th ese b acteria are n early imp o ssib le to treat. Wh at k in d o f ex treme en v iro n men ts d o Arch aea in h ab it? Hig h ly salty ; v ery h o t; h ig h ly acid ic. Wh y is it a b ad id ea to sto p tak in g an an tib io tic with o u t fin ish in g th e co u rse o f treatmen t? Man y targ et b acterial cells will remain aliv e in clu d in g th e o n es th at are mo st resistan t to th e an tib io tic. Th ese resistan t cells will b e th e fo u n d ers o f a n ew p o p u latio n o f b acteria in...
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