Test bank for campbell biology in focus 2nd edition urry

DOWNLOAD THE Test Bank for Campbell Biology in Focus 2nd Edition Urry
a a a a a a a a a a a




CampbellaBiologyainaFocus,a2ea(Urry)aChapte
ra2a TheaChemicalaContextaofaLife

2.1 Multiple-ChoiceaQuestions

1) Abouta20-
25%aofathea92anaturalaelementsaareaknownatoabeaessentialatoalife.aWhichafouraofatheseaelementsa
makeaupaapproximatelya96%aofalivingamatter?
A) carbon,asodium,ahydrogen,anitrogen
B) carbon,aoxygen,aphosphorus,ahydrogen
C) oxygen,ahydrogen,acalcium,anitrogen
D) carbon,ahydrogen,anitrogen,aoxygen
E) carbon,aoxygen,anitrogen,acalciuma
Answer:a D
Topic:a Concepta2.1
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.1

2) Traceaelementsaareathosearequiredabyaanaorganismainaonlyaminuteaquantities.aWhichaofatheafo
llowingaisaaatraceaelementathataisarequiredabyahumansaandaotheravertebrates?
A) nitrogen
B) calcium
C) iodine
D) sodium
E) phosphorusa
Answer:a C
Topic:a Concepta2.1
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.1

3) Traceaelementsaareathosearequiredabyaanaorganismainaonlyaminuteaquantities.aWhichaofatheafo
llowingaisaaatraceaelementathataisarequiredabyaallaorganisms?
A) iron
B) calcium
C) iodine
D) sodium
E) potassiuma
Answer:a A
Topic:a Concepta2.1
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.1




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4) Whichaofatheafollowingaisaprimarilyaresponsibleaforatheauniqueachemicalapropertiesaofaeachael
ement?
A) Eachaelementahasaaauniqueaatomicamass.
B) Eachaelementahasaaauniqueaatomicanumber.
C) Eachaelementahasaaauniqueanumberaofaprotons.
D) Eachaelementahasaaauniqueanumberaofaneutrons.
E) Eachaelementahasauniquearadioactiveaproperties.a
Answer:a C
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2

5) Fromatheaatomicamass,aoneacanadeduceatheanumberaof inaeachaatomaofaanaelement.
A) protons
B) neutrons
C) electrons
D) protonsaplusaelectrons
E) protonsaplusaneutronsa
Answer:a E
Topic:a Concepta2.2
Skill:aApplication/AnalysisaLearni
ngaOutcome:aa2.2

6) Inawhatawayaareaelementsainatheasameacolumnaofatheaperiodicatableatheasame?
A) Theyahaveatheasameanumberaofaprotons.
B) Theyahaveatheasameanumberaofaneutrons.
C) Theyahaveatheasameanumberaofaelectrons.
D) Theyahaveatheasameanumberaofaelectronsainatheiravalenceashell.
E) Theyahaveatheasameanumberaofaelectronashells.a
Answer:a D
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2

7) Inawhatawayaareaelementsainatheasamearowaofatheaperiodicatableatheasame?
A) Theyahaveatheasameanumberaofaprotons.
B) Theyahaveatheasameanumberaofaneutrons.
C) Theyahaveatheasameanumberaofaelectrons.
D) Theyahaveatheasameanumberaofaelectronsainatheiravalenceashell.
E) Theyahaveatheasameanumberaofaelectronashells.a
Answer:a E
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2




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8) Theanucleusaofaaanitrogenaatomacontainsa7aneutronsaanda7aprotons.aWhichaofatheafollowingaisaaaco
rrectastatementaconcerninganitrogen?
A) Theanitrogenaatomahasaaamassanumberaofa7aandaanaatomicanumberaofa14.
B) Theanitrogenaatomahasaaamassanumberaofa14aandaanaatomicanumberaofa7.
C) Theanitrogenaatomahasaaamassanumberaofa14aandaanaatomicanumberaofa14.
D) Theanitrogenaatomahasaaamassanumberaofa7aandaanaatomicanumberaofa21.
E) Theanitrogenaatomahasaaamassanumberaofa14aandaanaatomicanumberaofa21.aA
nswer:aB
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2

9) Foraelementsainatheafirstathreearowsaofatheaperiodicatable,atheapositionaofaanaelementainathearowain
dicatesawhichaofatheafollowing?
A) theatotalanumberaofaelectronsainatheaelement
B) theatotalanumberaofaprotonsainatheaelement
C) theatotalanumberaofaneutronsainatheaelement
D) theanumberaofaelectronaorbitalsainatheaelement
E) theanumberaofaelectronsainatheavalenceashella
Answer:a E
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2

10) Theachemicalabehavioraofaanaatomadependsaprimarilyauponawhichaofatheafollowing?
A) theanumberaofaneutronsainatheanucleus
B) theanumberaofaprotonsainatheanucleus
C) theanumberaofaelectronsainatheavalenceashell
D) theatotalanumberaofaelectronsacontainedabyatheaatom
E) theanumberaofaelectronashellsacontainedabyatheaatoma
Answer:a C
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2




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11) Molybdenumahasaanaatomicanumberaofa42.aSeveralacommonaisotopesaexist,awithamassan
umbersaofa92,a94,a95,a96,a97,a98,aanda100.aTherefore,awhichaofatheafollowingaisatrue?
A) Molybdenumaatomsacanahaveabetweena50aanda58aneutrons.
B) Theaisotopesaofamolybdenumahaveadifferentaelectronaconfigurations.
C) Theaisotopesaofamolybdenumacanahaveabetweena50aanda58aprotons.
D) Theaisotopesaofamolybdenumahaveabetweena50aanda58aneutronsaandahaveadifferentaelectronac
onfigurations.
E) Theaisotopesaofamolybdenumahaveabetweena50aanda58aprotonsaandahaveadifferentaelectronac
onfigurations.
Answer:a A
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2

12) Oneadifferenceabetweenacarbon-12a( a C)aandacarbon-14a( a C)aisathatacarbon-14ahas

A) twoamoreaprotonsathanacarbon-12.
B) twoamoreaelectronsathanacarbon-12.
C) twoamoreaneutronsathanacarbon-12.
D) twoamoreaprotonsaandatwoamoreaneutronsathanacarbon-12.
E) twoamoreaelectronsaandatwoamoreaprotonsathanacarbon-
12.aAnswer:a C
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2

13) Anaatomahasa6aelectronsainaitsaouterashell.aHowamanyaunpairedaelectronsadoesaitahave?
A) 0
B) 2
C) 4
D) 6
E) 2aora4aA
nswer:a B
Topic:a Concepta2.2
Skill:a Knowledge/Comprehensiona
LearningaOutcome:aa2.2




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