y y y y y y y y
Chaptery02y-yWater:yTheySolventyforyBiochemicalyReactions
1. Theytendencyyforyanyatomytoyattractyelectronsytoyitselfyinyaychemicalybondyisycalled
a. polarity.
b. electronegativity.
c. hydrophilicity
d. electrophilicity.
ANSWER: b
POINTS: 1
QUESTIONyTYPE: MultipleyChoice
HASyVARIABLES: False
LEARNINGyOBJECTIVES:y CAFA.BIOC.15.1y-yNewyiny6e
TOPICS: WateryandyPolarity
DATEyCREATED: 12/23/2013y2:14yPM
DATEyMODIFIED: 12/23/2013y2:14yPM
2. Ifyatomsywithygreatlyydifferingyelectronegativitiesyformyaybond,ythatybondywillybe
a. polar.
b. nonpolar.
c. amphipathic.
d. acidic.
ANSWER: a
POINTS: 1
QUESTIONyTYPE: MultipleyChoice
HASyVARIABLES: False
LEARNINGyOBJECTIVES:y CAFA.BIOC.15.1y-yNewyiny6e
TOPICS: WateryandyPolarity
DATEyCREATED: 12/23/2013y2:14yPM
DATEyMODIFIED: 12/23/2013y2:14yPM
3. Manyyofytheypropertiesyofywaterycanybeyaccountedyforybyytheyfactythat
a. ityisypolar
b. ityformsyhydrogenybonds
c. ityisyaybentymolecule
d. allyofytheseyareytrue
ANSWER: d
POINTS: 1
QUESTIONyTYPE: MultipleyChoice
HASyVARIABLES: False
LEARNINGyOBJECTIVES:y CAFA.BIOC.15.6y-yModifiedyiny7e
TOPICS: WateryandyPolarity
DATEyCREATED: 12/23/2013y2:14yPM
DATEyMODIFIED: 12/23/2013y2:14yPM
4. Whichyofytheyfollowingyisytrueyaboutyionicycompounds?
a. Theyyareymoreylikelyytoydissolveyinynon-polarysolventsythanycovalentycompounds.
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y y y y y y y y
Chaptery02y-yWater:yTheySolventyforyBiochemicalyReactions
b. Theyyalwaysydissolveycompletelyyinywater.
c. Theyyneverydissolveyinypolarysolvents.
d. Someyofythemydissolveycompletelyyinywateryoryotherypolarysolvents,ywhileyothersydoynot.
ANSWER: d
POINTS: 1
QUESTIONyTYPE: MultipleyChoice
HASyVARIABLES: False
LEARNINGyOBJECTIVES:y CAFA.BIOC.15.4y-yNewyiny7e
TOPICS: WateryandyPolarity
DATEyCREATED: 12/23/2013y2:14yPM
DATEyMODIFIED: 12/23/2013y2:14yPM
5. Whichyofytheyfollowingyisyaycorrectylistingyofyelectronegativityyvalues,yfromylowytoyhigh?
a. C,yH,yO,yN
b. N,yH,yO,yC
c. H,yC,yN,yO
d. H,yC,yO,yN
ANSWER: c
POINTS: 1
QUESTIONyTYPE:y MultipleyChoice
HASyVARIABLES:y False
TOPICS:
WateryandyPolarityy
DATEyCREATED:
12/23/2013y2:14yPMy
DATEyMODIFIED:y y 12/23/2013y2:14yPM
6. Whichyofytheyfollowingyelementsyhasytheyhighestyelectronegativity?
a.yC
b.yH
c.yN
d.yO
e.yP
ANSWER: d
POINTS: 1
QUESTIONyTYPE: MultipleyChoice
HASyVARIABLES: False
LEARNINGyOBJECTIVES:y CAFA.BIOC.15.5y-yModifiedyfromy5e
TOPICS: WateryandyPolarity
DATEyCREATED: 12/23/2013y2:14yPM
DATEyMODIFIED: 12/23/2013y2:14yPM
7. Theywaterymoleculeyisypolarybecause:
a. Electronsyareynotydistributedysymmetricallyyinytheymolecule.
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, b. Theyhydrogenyatomsyareyfoundyonyoney"side"yofytheymolecule.
c. Hydrogenyisylessyelectronegativeythanyoxygen.
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