EditionRTaylor
CampbellRBiology:RConceptsRandRConnections,R9eR(TaylorRetRal.)RCh
apterR2R TheRChemicalRBasisRofRLife
2.1 MultipleRChoiceRQuestions
1) TheRfourRmostRcommonRelementsRinRlivingRorganismsRare
A) C,RH,RO,RFe.
B) C,RH,RO,RNa.
C) C,RH,RO,RN.
D) C,RN,RO,RNa.
Answer:R CRTo
pic:R 2.1
Skill:R Remembering/Understanding
RLearningROutcome:R 2.1
2) WhichRofRtheRfollowingRisRaRtraceRelementRinRtheRhumanRbody?
A) nitrogen
B) zinc
C) oxygen
D) hydrogen
RAnswer:R
BRTopic:R 2
.1
Skill:R Remembering/Understanding
RLearningROutcome:R 2.1
3) WhichRofRtheRfollowingRstatementsRregardingRmatterRisRfalse?
A) AllRlifeRisRcomposedRofRmatter.
B) AllRmatterRhasRmass.
C) AllRmatterRisRcomposedRofRelements.
D) AllRmatterRexistsRinRtheRformRofRcompou
nds.RAnswer:R D
Topic:R 2.1
Skill:R Remembering/Understanding
RLearningROutcome:R 2.1
4) WhichRofRtheRfollowingRstatementsRbestRdescribesRaRcompound?
A) ARcompoundRisRaRpureRelement.
B) ARcompoundRcontainsRtwoRorRmoreRdifferentRelementsRinRaRfixedRratio.
C) ARcompoundRisRexemplifiedRbyRsodium.
D) ARcompoundRisRaRsolutio
n.RAnswer:R B
Topic:R 2.1
Skill:R Remembering/Understanding
RLearningROutcome:R 2.1
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5) InRtheRequationR2RH2R+RO2R→R2RH2O,
A) H2,RO2,RandRH2ORareRallRcompounds.
B) H2,RO2,RandRH2ORareRallRelements.
C) onlyRH2ORisRaRcompound.
D) onlyRH2RandRO2RareRcompoun
ds.RAnswer:R C
Topic:R 2.1
Skill:R Applying/AnalyzingR
LearningROutcome:R 2.1
GlobalRLO:R 2
6) WhichRofRtheRfollowingRtraceRelementsRneededRbyRhumansRisRcommonlyRaddedRtoRtableRsalt?
A) iodine
B) iron
C) magnesium
D) fluoride
RAnswer:R
ARTopic:R
2.2
Skill:RRemembering/Understanding
RLearningROutcome:R 2.1
GlobalRLO:R 5
7) InRsomeRareas,RfluorideRisRaddedRduringRtheRmunicipalRwaterRtreatmentRprocessRinRorderRtoRhelp
A) preventRgoiter.
B) preventRtheRgrowthRofRbacteria.
C) preventRtheRdevelopmentRofRmentalRretardation.
D) reduceRtoothRdeca
y.RAnswer:R D
Topic:R 2.2
Skill:R Remembering/Understanding
RLearningROutcome:R 2.1
GlobalRLO:R 5
8) WhichRofRtheRfollowingRparticlesRareRfoundRinRtheRnucleusRofRanRatom?
A) protonsRandRneutrons
B) protonsRandRelectrons
C) neutronsRandRelectrons
D) neutrons,Relectrons,RandRproto
nsRAnswer:R A
Topic:R 2.3
Skill:R Remembering/Understanding
RLearningROutcome:R 2.2
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9) ElectronsRmoveRaboutRtheRnucleusRofRanRatomRinRtheRsameRwayRthat
A) insectsRflyRaroundRaRbrightRlampRatRnight.
B) carsRareRparkedRalongRtheRsidesRofRaRstreet.
C) boatsRcrossRaRlake.
D) birdsRmigrateRtoRaRnewRwinterRho
me.RAnswer:R A
Topic:R 2.3
Skill:R Applying/AnalyzingR
LearningROutcome:R 2.2
GlobalRLO:R 2
10) WhatRisRtheRatomicRmassRofRanRatomRthatRhasR6Rprotons,R6Rneutrons,RandR6Relectrons?
A) 6
B) 8
C) 12
D) 18
Answer:R CRTo
pic:R 2.3
Skill:R Applying/AnalyzingR
LearningROutcome:R 2.2
GlobalRLO:R 2,R4
11) AnRunchargedRatomRofRboronRhasRanRatomicRnumberRofR5RandRanRatomicRmassRofR1
1.RHowRmanyRelectronsRdoesRboronRhave?
A) 11
B) 15
C) 5
D) 2
Answer:R CRTo
pic:R 2.3
Skill:R Applying/AnalyzingR
LearningROutcome:R 2.2
GlobalRLO:R 2
12) TheRsodiumRatomRcontainsR11Relectrons,R11Rprotons,RandR12Rneutrons.RWhatRisRth
eRmassRnumberRofRsodium?
A) 11
B) 22
C) 23
D) 34
Answer:R CRTo
pic:R 2.3
Skill:R Applying/AnalyzingR
LearningROutcome:R 2.2
GlobalRLO:R 2,R4
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