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Microbiology An Evolving Science, 5th Edition,
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John Foster & Joan Slonczewski, All Chapter 1 - 28
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,
,CHAPTER 1: Microbial Life: Origin and Discovery
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MULTIPLEWCHOICE
1. VirusesWare:
a. infectiousWagentsWthatWinfectWmulti-cellularWorganisms
b. noncellularWparticlesWthatWtakeWoverWtheWmetabolismWofWaWcellWtoWgenerateWmoreWv
irusWparticles
c. pathogensWthatWreplicateWinWcomplexWgrowthWmedia
d. cellularWparticlesWthatWbelongWtoWtheWarchaeaWdomain
e. microbesWthatWconsistWofWlipidWmembraneWenclosedWgenomes
ANS:W B DIF: Easy REF:WWW1.1 TOP:W I.AW|WI.B
MSC:W Remembering
2. AnalysisWofWDNAWsequencesWreveals:
a. theWancientWconvergenceWofWtwoWcellWtypes,Wi.e.,WprokaryotesWandWeukaryot
es
b. prokaryotesWandWeukaryotesWevolvedWfromWaWcommonWancestralWcell
c. thatWbacteriaWshareWcommonWancestorWwithWarchaea,WbutWnotWwithWeukarya
d. prokaryotesWareWcellsWwithWaWnucleus
e. theWgenomeWofWHaemophilusWinfluenzaeWhasWaboutW2WbillionWbaseWpairs
ANS:W B DIF: Easy REF:WWW1.1 TOP:W I.AW|WI.B
MSC:W Remembering
3. WhichWofWtheseWgroupsWareWconsideredWtoWbeWmicrobesWbutWNOTWconsideredWtoWbeWcells?
a. viruses d. protists
b. bacteria e. filamentousWfungi
c. archaea
ANS:W A DIF: Easy REF:WWW1.1 TOP:W I.A.i
MSC:W Remembering
4. AWmicrobeWisWcommonlyWdefinedWas:
a. aWvirusWthatWrequiresWaWmicroscopeWtoWbeWseen
b. aWbacteriumWthatWrequiresWaWmicroscopeWtoWbeWseen
c. aWsingle-
cellularWprokaryoteWthatWrequiresWaWmicroscopeWtoWbeWseen
d. aWmulticellularWeukaryoteWthatWrequiresWaWmicroscopeWtoWbeWseen
e. aWlivingWorganismWthatWrequiresWaWmicroscopeWtoWbeWseen
ANS:W E DIF: Easy REF:WWW1.1 TOP:W I.A.iW|WI.A.ii
MSC:W Remembering
5. WhichWoneWofWtheWfollowingWstatementsWregardingWmicrobialWcellsWisWNOTWtrue?
a. MicrobialWcellsWacquireWfood,WgainWenergyWtoWbuildWthemselves,WandWrespond
Wto
environmentalWchange.
, b. MostWsingle-
celledWorganismsWrequireWaWmicroscopeWtoWrenderWthemWvisible,WbutWsome
bacterialWcellsWareWlargeWenoughWtoWbeWseenWwithWnakedWeyes.
c. MicrobesWfunctionWasWindividualWentities.
d. ManyWmicrobesWformWcomplexWmulticellularWassemblages.
e. VirusesWareWnotWconsideredWasWmicrobialWcells.
ANS:W C DIF: Easy REF:WWW1.1 TOP:W I.A.iW|WI.A.ii
MSC:W Remembering
6. WhichWofWtheWfollowingWstatementsWisWFALSE?
a. AWgenomeWisWtheWtotalWgeneticWinformationWcontainedWinWanWorganism’sWchromosomalWDNA.
b. IfWaWmicrobe’sWgenomeWincludesWgenesWforWnitrogenase,WthatWmicrobeWprobablyWcanWfixWnit
rogen.
c. ByWcomparingWDNAWsequencesWofWdifferentWorganisms,WweWcanWfigureWoutWhowWclosely
relatedWtheyWare.
d. FredWSangerWdevelopedWtheWfirstWapplicableWDNAWsequencingWmethod.
e. FredWSangerWcompletedWtheWsequencesWofWHaemophilusWinfluenzae.
ANS:W E DIF: Easy REF:WWW1.1 TOP:W I.B
MSC:W Remembering
7. TheWfirstWcellularWgenomesWtoWbeWsequencedWwereWthoseWof:
a. humans d. prions
b. bacteria e. fungi
c. viruses
ANS:W B DIF: Easy REF:WWW1.1 TOP:W I.B.i
MSC:W Remembering
8. TheWenvironmentWofWearlyWEarthWmayWhaveWcontainedWallWofWtheWfollowingWEXCEPT:
a. ferrousWiron d. oxygen
b. methane e. hydrogenWgas
c. ammonia
ANS:W D DIF: Easy
REF:WSpecialWTopicW1.1WTOP:W II.D
MSC:W Remembering
9. TheWdevelopmentWofWtheWtheoryWofWtheW―RNAWworld‖WresultedWfromWtheWdiscoveryWof:
a. archaea d. ribozymes
b. prions e. endosymbionts
c. bacteria
ANS:W D DIF: Medium
REF:WSpecialWTopicW1.1WTOP:W II.D
MSC:W Remembering
10. WhichWmicrobesWmayWresembleWthoseWofWtheWearliestWlifeWforms?
a. archaea d. cyanobacteria
b. photosyntheticWalgae e. protists
c. viruses
ANS:W A DIF: Medium
REF:WSpecialWTopicW1.1WTOP:W II.D
MSC:W Remembering
11. EarlyWmetabolismWmayWhaveWbeenWcatalyzedWby:
a. DNA d. aminoWacids
b. RNA e. carbohydrates