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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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MULTIPLE tyCHOICE
1. Viruses tyare:
a. infectious tyagents tythat tyinfect tymulti-cellular tyorganisms
b. noncellular typarticles tythat tytake tyover tythe tymetabolism tyof tya tycell tyto tygenerate tymore
tyvirusytparticles
c. pathogens tythat tyreplicate tyin tycomplex tygrowth tymedia
d. cellular typarticles tythat tybelong tyto tythe tyarchaea tydomain
e. microbes tythat tyconsist tyof tylipid tymembrane tyenclosed tygenomes
ANS: t y B DIF: Easy REF: ty ty ty1.1 TOP: t y I.A ty| tyI.B
MSC: t y Remembering
2. Analysis tyof tyDNA tysequences tyreveals:
a. the tyancient tyconvergence tyof tytwo tycell tytypes, tyi.e., typrokaryotes tyand
tyeukaryotes
b. prokaryotes tyand tyeukaryotes tyevolved tyfrom tya tycommon tyancestral tycell
c. that tybacteria tyshare tycommon tyancestor tywith tyarchaea, tybut tynot tywith tyeukarya
d. prokaryotes tyare tycells tywith tya tynucleus
e. the tygenome tyof tyHaemophilus tyinfluenzae tyhas tyabout ty2 tybillion tybase typairs
ANS: t y B DIF: Easy REF: ty ty ty1.1 TOP: t y I.A ty| tyI.B
MSC: t y Remembering
3. Which tyof tythese tygroups tyare tyconsidered tyto tybe tymicrobes tybut tyNOT tyconsidered tyto tybe tycells?
a. viruses d. protists
b. bacteria e. filamentous tyfungi
c. archaea
ANS: t y A DIF: Easy REF: ty ty ty1.1 TOP: t y I.A.i
MSC: t y Remembering
4. A tymicrobe tyis tycommonly tydefined tyas:
a. a tyvirus tythat tyrequires tya tymicroscope tyto tybe tyseen
b. a tybacterium tythat tyrequires tya tymicroscope tyto tybe tyseen
c. a tysingle-cellular typrokaryote tythat tyrequires tya tymicroscope tyto tybe
tyseen
d. a tymulticellular tyeukaryote tythat tyrequires tya tymicroscope tyto tybe tyseen
e. a tyliving tyorganism tythat tyrequires tya tymicroscope tyto tybe tyseen
ANS: t y E DIF: Easy REF: ty ty ty1.1 TOP: t y I.A.i ty| tyI.A.ii
MSC: t y Remembering
5. Which tyone tyof tythe tyfollowing tystatements tyregarding tymicrobial tycells tyis tyNOT tytrue?
a. Microbial tycells tyacquire tyfood, tygain tyenergy tyto tybuild tythemselves, tyand tyrespond
tyto
environmental tychange.
, b. Most tysingle-celled tyorganisms tyrequire tya tymicroscope tyto tyrender tythem tyvisible, tybut
tysome
bacterial tycells tyare tylarge tyenough tyto tybe tyseen tywith tynaked tyeyes.
c. Microbes tyfunction tyas tyindividual tyentities.
d. Many tymicrobes tyform tycomplex tymulticellular tyassemblages.
e. Viruses tyare tynot tyconsidered tyas tymicrobial tycells.
ANS: t y C DIF: Easy REF: ty ty ty1.1 TOP: t y I.A.i ty| tyI.A.ii
MSC: t y Remembering
6. Which tyof tythe tyfollowing tystatements tyis tyFALSE?
a. A tygenome tyis tythe tytotal tygenetic tyinformation tycontained tyin tyan tyorganism’s tychromosomal tyDNA.
b. If tya tymicrobe’s tygenome tyincludes tygenes tyfor tynitrogenase, tythat tymicrobe typrobably tycan
tyfixytnitrogen.
c. By tycomparing tyDNA tysequences tyof tydifferent tyorganisms, tywe tycan tyfigure tyout tyhow tyclosely
related tythey tyare.
d. Fred tySanger tydeveloped tythe tyfirst tyapplicable tyDNA tysequencing tymethod.
e. Fred tySanger tycompleted tythe tysequences tyof tyHaemophilus tyinfluenzae.
ANS: t y E DIF: Easy REF: ty ty ty1.1 TOP: t y I.B
MSC: t y Remembering
7. The tyfirst tycellular tygenomes tyto tybe tysequenced tywere tythose tyof:
a. humans d. prions
b. bacteria e. fungi
c. viruses
ANS: t y B DIF: Easy REF: ty ty ty1.1 TOP: t y I.B.i
MSC: t y Remembering
8. The tyenvironment tyof tyearly tyEarth tymay tyhave tycontained tyall tyof tythe tyfollowing tyEXCEPT:
a. ferrous tyiron d. oxygen
b. methane e. hydrogen tygas
c. ammonia
ANS: t y D DIF: Easy REF: tySpecial tyTopic
ty1.1ytTOP: t y II.D MSC: t y Remembering
9. The tydevelopment tyof tythe tytheory tyof tythe ty―RNA tyworld‖ tyresulted tyfrom tythe tydiscovery tyof:
a. archaea d. ribozymes
b. prions e. endosymbionts
c. bacteria
ANS: t y D DIF: Medium REF: tySpecial tyTopic
ty1.1ytTOP: t y II.D MSC: t y Remembering
10. Which tymicrobes tymay tyresemble tythose tyof tythe tyearliest tylife tyforms?
a. archaea d. cyanobacteria
b. photosynthetic tyalgae e. protists
c. viruses
ANS: t y A DIF: Medium REF: tySpecial tyTopic
ty1.1ytTOP: t y II.D MSC: t y Remembering
11. Early tymetabolism tymay tyhave tybeen tycatalyzed tyby:
a. DNA d. amino tyacids
b. RNA e. carbohydrates