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Biology 101 Test Bank
Biology 101 Test Bank Water and Life
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Biology 101 TestBank
Water and Life
,1. In ta tsingle tmolecule tof twater, ttwo thydrogen tatoms
taretbonded tto ta tsingle toxygen tatom tby?
A. hydrogen tbonds.
B. nonpolar tcovalent tbonds.
C. polar tcovalent tbonds.
D. ionic tbonds.
E. van tder tWaals tinteractions.
2. In ta tgroup tof twater tmolecules, thydrogen tbonds
tformtbetween?
A. the toxygen tatoms tin tdifferent twater tmolecules
B. Two thydrogen tatoms tin tdifferent twater tmolecules
C. the toxygen tatom tin tone twater tmolecule tand
tathydrogen tatom tin tanother twater tmolecule
D. the thydrogen tatoms tin ta tsingle twater tmolecule
E. None tof tthe tlisted tresponses tis tCorrect
3. Life ton tEarth tis tdependent ton tall tthe tproperties tof
twatertas twell tas tthe tabundance tof twater. tWhich
tproperty tof twater tis tprobably tmost timportant tfor tthe
tfunctioning tof torganisms tat tthe tmolecular tlevel?
A. high tspecific theat
B. cohesion tand thigh tsurface ttension
C. versatility tas ta tsolvent
D. expansion tupon tfreezing
E. high theat tof tvaporization
4. Some tsubstances, tsuch tas toil tand tgasoline, twill
tnottdissolve tin twater tbecause?
A. oil tand tgasoline tare torganic tcompounds,
B. their tmolecules thave tno tcharges tor tpartial tcharges
ttotwhich twater tmolecules tcan tadhere
C. their telectrons tare tso tstable tthat tthey tdo tnot
texchangetatoms twith twater tmolecules
D. they tdo tnot tionize
E. their tmolecules tare tso tlarge
7
,5. The tpartial tcharges ton ta twater tmolecule toccur
tbecausetof?
A. widespread tionization
B. the tunequal tsharing tof telectrons tbetween tthe
thydrogen tand tthe toxygen tatoms tof ta twater
tmolecule
C. the thigh telectronegativity tof thydrogen
D. covalent tbonding
E. the tachievement tof ta tstable tconfiguration tby tone tatom tof
tatbond tbut tnot tby tthe tother tpartner
6. Water tmolecules thave than tmolecules tof
tsimilartsize, tsuch tas tammonia tand tmethane,
treflecting tits tcapacity tto tabsorb tlarge tamounts tof
theat.
A. less tsurface ttension
B. a thigher tboiling tpoint
C. a tlower tcapacity tfor tforming
D. lower tspecific theat thydrogen tbonds
E. a tlower tmelting tpoint
7. Most tof twater's tunique tfeatures t(for texample, tits
tversatility tas ta tsolvent, tability tto tmoderate
ttemperature,tand tcohesive tbehavior) tresult tfrom tthe
tfact tthat?
A. hydrogen tis tthe tonly telement twithout tany tneutrons.
B. oxygen tattracts telectrons tmore tthan thydrogen tdoes.
C. oxygen thas tonly tone tstable tisotope, tbut thydrogen
thastthree.
D. oxygen thas ttwo tunfilled telectron tshells.
E. More tthan tone tof tthe tabove tis tCorrect.
8
, 8. The tslight tnegative tcharge tat tone tend tof tone twater
tmolecule tis tattracted tto tthe tslight tpositive tcharge tof
tanother twater tmolecule. tWhat tis tthis tattraction
tcalled?
A. a tcovalent tbond
B. a thydrogen tbond
C. an tionic tbond
D. a thydrophilic tbond
E. a tvan tder tWaals tinteraction
9. Sulfur tis tin tthe tsame tcolumn tof tthe tperiodic ttable
tastoxygen, tbut thas telectronegativity tsimilar tto
tcarbon. tCompared tto twater tmolecules, tmolecules
tof tH2S?
A. will tionize tmore treadily.
B. will thave tgreater tcohesion tto tother tmolecules tof tH2S.
C. will thave ta tgreater ttendency tto tform thydrogen tbonds
twithteach tother.
D. will thave ta thigher tcapacity tto tabsorb theat tfor tthe
tsametchange tin ttemperature.
E. will tnot tform thydrogen tbonds twith teach tother.
10. Water tmolecules tare table tto tform thydrogen tbonds twith?
A. compounds tthat thave tpolar tcovalent tbonds.
B. oils.
C. oxygen tgas t(O2. tmolecules.
D. chloride tions.
E. any tcompound tthat tis tnot tsoluble tin twater.
9
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