生命的探索抗生素（英文ppt）

《生命的探索抗生素（英文ppt）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Lab1Biology:ExploringLife0AntibioticsTooMuchofaGoodThing?Yourdoctorprescribesanantibioticandspecificallycautionsyoutotakeeverypill.Why?AntibioticsCheckpointAntibioticsWhatisanantibiotic?a.Itisatoxinusedbybacteriatokillmolds.b.Itisadrugthatcankillinfectiousbacteria.c.It

2、isachemicalproducedbythebodytodefenditselfagainstviruses.d.It’sanareawithconditionsthatdon’tsupportlife.e.Noneoftheabovearecorrect.CheckpointAntibioticsHumanwhitebloodcells________.a.carryoxygenandcarbondioxidetothelungsb.storeantibioticsforreleaseatsitesofinfectionc.s

3、erveasoneofthebody’snaturallinesofdefenseagainstmicrobialinvadersd.gatherandeliminateantibioticsfromthesiteofaninfectione.Allofthesearecorrect.CheckpointAntibioticsAbouthalfoftheantibioticsproducedtoday__________.a.endupinanimalfeedb.areusedbyfieldhospitalsinwarzonesc.

4、areshippedtothird-worldcountriesd.becomeuselessduetodevelopingresistancebybacterialpopulationse.arestoredforlateruseCheckpointAntibioticsHowdobacteriapopulationsbecomedrugresistant?a.Antibioticsremovedrug-susceptibleindividualsbutleavethosethataredrug-resistant.b.Natur

5、alselectiondrivesbacterialpopulationstochange.c.Someindividualsaregeneticallyresistanttoantibiotics.d.Allofthesearecorrect.CheckpointAntibioticsWhichoftheseisnotaneffectivestrategytopreventantibioticresistance?a.Don’tstockpileantibiotics.b.Don’tdemandantibioticsfromyou

6、rphysician.c.Useantibioticsonlyaslongassymptomsremain.d.Useantibioticsasprescribed.e.Don’tshareantibioticswithothers.BiologyandSocietyAntibioticsThedevelopmentofantibioticresistancebybacteriaillustrateshownaturalselectionaffectsourlives.Canyounameanotherwayoursocietyex

7、periencestheeffectsofnaturalselection?AntibioticsDiscussionQuestionThedevelopmentofantibioticresistancebybacteriaillustrateshownaturalselectionaffectsourlives.Canyounameanotherwayoursocietyexperiencestheeffectsofnaturalselection?Follow-UpQuestionsIsitlikelythatinsector

8、plantpests(weeds)mightdevelopresistancetopesticidesandherbicides?Someplants,likeBTcornandBTcotton,arebeingengineeredt