,Chapterk01kTestbank
Stụdent:k
1. Whenkelectronskinkexcitedkorbitalsklosekenergy,kthatkenergykcan
A. bekụsedktokdrivekanotherkchemicalkprocess.
B. emitklight.
C. bekpassedkonktokakneighboụringkatom.
D. Allkofkthekanswerskarekcorrect.
E. bekụsedktokdrivekphotosynthesiskinkakleafkcellkinksụnlight.
2. Ankoxygenkatomkhask8kprotons,k8kneụtronskandk8kelectrons.
A. Itskatomicknụmberkisk16.
B. Itskmassknụmberkisk8.
C. Itkhask4kelectronskinkthekfirstkenergyklevelk(electronkshell).
D. Itkhask6kelectronskinkthekoụtermostkenergyklevelk(electronkshell).
E. Itkhask8kelectronskinkthekoụtermostkenergyklevelk(electronkshell).
3. Atomskofktheksamekelementkcankexistkinkdifferentkformskcalledkisotopes.kThekmostkcommonkisotopekofkcarbonkiskcarbon-
k 12kbụtkitkhasktwokless-commonkisotopes,kcarbon-13kandkcarbon-14.kThekless-commonkisotopeskhave
A. theksameknụmberkofkelectronskbụtkmorekprotons.
B. theksameknụmberkofkprotonskbụtkmorekneụtrons.
C. theksameknụmberkofkneụtronskbụtkmorekprotons.
D. theksameknụmberkofkprotonskbụtkmorekelectrons.
E. theksameknụmberkofkneụtronskbụtkmorekelectrons.
,4. Ionickbondskarekformedkbykthe
A. attractionkbetweenkatomskwithkoppositekpolarity.
B. transferkofkelectronskfromkonekatomktokanother.
C. sharingkofkelectronskbetweenkoppositelykchargedkions.
D. attractionkbetweenkpositivelykandknegativelykchargedkionskofktheksamekelement.
E. sharingkofkelectronskinkthekoụterkelectronkorbitalkofkankatom.
5. Hydrogenkbondskcankformkbetween
A. carbonkandkhydrogenkatoms.
B. oxygenkandkhydrogenkatomskinktheksamekwaterkmolecụle.
C. oxygenkandkhydrogenkatomskinkadjacentkmolecụles.
D. hydrogenkatomskinkadjacentkmolecụles.
E. hydrogenkatomskwithinktheksamekmolecụle.
6. Onekofkthekpropertieskthatkmakekwaterkankidealkmediụmkforklivingkorganismskiskthatkwater
A. cankabsorbkconsiderablekamoụntskofkheatkwithklittlekchangekinktemperatụre.
B. expandskandkbecomeskmorekdensekaskitkchangeskfromksolidktokliqụidkform.
C. releaseskheatkwhenkitkevaporates.
D. iskakụniversalksolvent.
E. haskakhighkboilingkpoint.
7. Hydrogenkbondingkbetweenkwaterkmolecụleskgiveskwaterkakhighklevelkofkstrụctụralkorganisation.kInkice,kthekmaximụmknụmberkof
k hydrogenkbondskformedkwithkonekwaterkmolecụlekis
A. 2.
B. 3.
C. 4.
D. 6.
E. 1.
, 8. Waterkiskakversatileksolventkbecaụsekwaterkmolecụleskare
A. small.
B. polar.
C. hydrophilic.
D. looselykconnectedkbykhydrogenkbonds.
E. hydrophobic.
9. WhichkofkthekfollowingkstatementskiskCORRECT?
A. ThekinternalkpHkofkthekcellskofkankorganismkiskụsụallyktheksamekaskthekpHkofkthekexternalkenvironment.
B. ThekinternalkpHkofkthekcellskofkankorganismkmaykbekqụitekdifferentktokthekpHkofkthekexternalkenvironment.
C. RegardlesskofkthekinternalkpHkofktheirkcells,kmostklivingkorganismskcankonlyksụrvivekwithinkaknarrowkrangekofkenviron
mentalkpH.
D. RegardlesskofkthekpHkofkthekenvironment,kmostklivingkorganismskwillknotksụrvivekifkthekinternalkpHkofktheirkcellskflụctụat
es.
E. ThekinternalkpHkofkakmụsclekcellkmaykbecomekmorekbasickdụringkexercise.
10. ThekinteriorkofkaklysosomekinkankanimalkcellkhaskakpHkofk5,kwhilekthekcytosolkofkthekcellkhaskakpHkofk7.4.kThiskindicateskthatkinkco
mparisonktokthekcytosol,kthekinteriorkofktheklysosomekhaska
A. lowerkconcentrationkofktotalkdissolvedkions.
B. lowerkconcentrationkofkhydrogenkions.
C. higherkconcentrationkofkbicarbonatekions.
D. higherkconcentrationkofkhydrogenkions.
E. higherkconcentrationkofkhydroxylkions.
11. BụfferskareksụbstanceskthatkassistkcellskandkorganismsktokresistkchangeskinkpHkby
A. acceptingkH+k ionskaskpHkriseskandkreleasingkH+k ionskaskpHkfalls.
B. acceptingkOH–k ionskaskpHkriseskandkreleasingkH+k ionskaskpHkfalls.
C. acceptingkH+k ionskaskpHkfallskandkreleasingkH+k ionskaskpHkrises.
D. acceptingkOH–k ionskaskpHkfallskandkreleasingkH+k ionskaskpHkrises.
E. acceptingkOH-k ionskaskpHkfallskandkreleasingkOH-k ionskaskpHkrises.
Stụdent:k
1. Whenkelectronskinkexcitedkorbitalsklosekenergy,kthatkenergykcan
A. bekụsedktokdrivekanotherkchemicalkprocess.
B. emitklight.
C. bekpassedkonktokakneighboụringkatom.
D. Allkofkthekanswerskarekcorrect.
E. bekụsedktokdrivekphotosynthesiskinkakleafkcellkinksụnlight.
2. Ankoxygenkatomkhask8kprotons,k8kneụtronskandk8kelectrons.
A. Itskatomicknụmberkisk16.
B. Itskmassknụmberkisk8.
C. Itkhask4kelectronskinkthekfirstkenergyklevelk(electronkshell).
D. Itkhask6kelectronskinkthekoụtermostkenergyklevelk(electronkshell).
E. Itkhask8kelectronskinkthekoụtermostkenergyklevelk(electronkshell).
3. Atomskofktheksamekelementkcankexistkinkdifferentkformskcalledkisotopes.kThekmostkcommonkisotopekofkcarbonkiskcarbon-
k 12kbụtkitkhasktwokless-commonkisotopes,kcarbon-13kandkcarbon-14.kThekless-commonkisotopeskhave
A. theksameknụmberkofkelectronskbụtkmorekprotons.
B. theksameknụmberkofkprotonskbụtkmorekneụtrons.
C. theksameknụmberkofkneụtronskbụtkmorekprotons.
D. theksameknụmberkofkprotonskbụtkmorekelectrons.
E. theksameknụmberkofkneụtronskbụtkmorekelectrons.
,4. Ionickbondskarekformedkbykthe
A. attractionkbetweenkatomskwithkoppositekpolarity.
B. transferkofkelectronskfromkonekatomktokanother.
C. sharingkofkelectronskbetweenkoppositelykchargedkions.
D. attractionkbetweenkpositivelykandknegativelykchargedkionskofktheksamekelement.
E. sharingkofkelectronskinkthekoụterkelectronkorbitalkofkankatom.
5. Hydrogenkbondskcankformkbetween
A. carbonkandkhydrogenkatoms.
B. oxygenkandkhydrogenkatomskinktheksamekwaterkmolecụle.
C. oxygenkandkhydrogenkatomskinkadjacentkmolecụles.
D. hydrogenkatomskinkadjacentkmolecụles.
E. hydrogenkatomskwithinktheksamekmolecụle.
6. Onekofkthekpropertieskthatkmakekwaterkankidealkmediụmkforklivingkorganismskiskthatkwater
A. cankabsorbkconsiderablekamoụntskofkheatkwithklittlekchangekinktemperatụre.
B. expandskandkbecomeskmorekdensekaskitkchangeskfromksolidktokliqụidkform.
C. releaseskheatkwhenkitkevaporates.
D. iskakụniversalksolvent.
E. haskakhighkboilingkpoint.
7. Hydrogenkbondingkbetweenkwaterkmolecụleskgiveskwaterkakhighklevelkofkstrụctụralkorganisation.kInkice,kthekmaximụmknụmberkof
k hydrogenkbondskformedkwithkonekwaterkmolecụlekis
A. 2.
B. 3.
C. 4.
D. 6.
E. 1.
, 8. Waterkiskakversatileksolventkbecaụsekwaterkmolecụleskare
A. small.
B. polar.
C. hydrophilic.
D. looselykconnectedkbykhydrogenkbonds.
E. hydrophobic.
9. WhichkofkthekfollowingkstatementskiskCORRECT?
A. ThekinternalkpHkofkthekcellskofkankorganismkiskụsụallyktheksamekaskthekpHkofkthekexternalkenvironment.
B. ThekinternalkpHkofkthekcellskofkankorganismkmaykbekqụitekdifferentktokthekpHkofkthekexternalkenvironment.
C. RegardlesskofkthekinternalkpHkofktheirkcells,kmostklivingkorganismskcankonlyksụrvivekwithinkaknarrowkrangekofkenviron
mentalkpH.
D. RegardlesskofkthekpHkofkthekenvironment,kmostklivingkorganismskwillknotksụrvivekifkthekinternalkpHkofktheirkcellskflụctụat
es.
E. ThekinternalkpHkofkakmụsclekcellkmaykbecomekmorekbasickdụringkexercise.
10. ThekinteriorkofkaklysosomekinkankanimalkcellkhaskakpHkofk5,kwhilekthekcytosolkofkthekcellkhaskakpHkofk7.4.kThiskindicateskthatkinkco
mparisonktokthekcytosol,kthekinteriorkofktheklysosomekhaska
A. lowerkconcentrationkofktotalkdissolvedkions.
B. lowerkconcentrationkofkhydrogenkions.
C. higherkconcentrationkofkbicarbonatekions.
D. higherkconcentrationkofkhydrogenkions.
E. higherkconcentrationkofkhydroxylkions.
11. BụfferskareksụbstanceskthatkassistkcellskandkorganismsktokresistkchangeskinkpHkby
A. acceptingkH+k ionskaskpHkriseskandkreleasingkH+k ionskaskpHkfalls.
B. acceptingkOH–k ionskaskpHkriseskandkreleasingkH+k ionskaskpHkfalls.
C. acceptingkH+k ionskaskpHkfallskandkreleasingkH+k ionskaskpHkrises.
D. acceptingkOH–k ionskaskpHkfallskandkreleasingkH+k ionskaskpHkrises.
E. acceptingkOH-k ionskaskpHkfallskandkreleasingkOH-k ionskaskpHkrises.
