itol
C)
phosphatidylsery
equal
amounts
inboth
theouter
andinner
portions
ofthe
lipid
bilayer?
1)
_______
A)
cholesterol
B)
phophatidylinos Chapter17ExamName___________________________________
MULTIPLECHOICE.Choosetheonealternativethatbestcompletesthestatementoranswersthequestion.
1)
Ofthe
following
lipids,
whichis
foundin
approxim
atel ine
D)
phophatidyletha nolamine
E)
glycolipid
2)
The
scientist(s
)who
developed
the
"sandwich
"model
ofthecell
membran
eis(are)
2)
____ ___
L
m
aui
nr.
g
G orterandGrendel.
Davsonand
Danielli.
D)
Overton.
E)
Robertson.
3)
Youare
examinin
gan
electron
micrograp
hofcells
obtained
froma
newdeepsealife
form.
Upon
closer
examinati
on,you
noticethat
thereare
twodark
lines
separated
bya
lightly
stained
region.
These
resultsare
similarto
the
observatio
nof
which
person's
or
persons'
investigati
oninto
membran
e
structure?
3)
____ ___
S
a
i nd
nNi
gco
els
ron
U nwinandHenderson
Gorterand
Grendel
D)
Overton
E)
Robertson
4)
With
respectto
theouter
andinner
facesof
thelipid
bilayerof
thecell
membran
e,the
compositi
onof
proteinsis
4)
____ ___
i nti
dca
el.
as ymmetrical.
notidentical,
butsymmetrical.
D)
amirrorimage.
E)
highlyrandom andvariesthroughoutthecell.
5)
The
technique
that
allows
various
proteins
tobe
differentia
tedbased
onsize,
oncethe
proteins
havebeen
denatured
,is
5)
____ ___
l e
i fo
pr
om
sati
oon
m
.
th freezefracture
e technique.
photobleaching.
D)
SDS-PAGE.
E)
ferritin
conjugatedlectins.
6)
To
facilitate
the
regulation
of
membran
efluidity,
E.colihas
the
enzyme
6)
____ ___
glio
asi
nda
gse.
un saturase.
bacteriorhodops in.
D)
fattyacid
convertase.
E)
desaturase.
7)
Ameans
of
detecting
the
presence
ofspecific
carbohydr
ate
moieties
on
glycoprot
einsis
7)
____ ___
pbl
hea
och
t in
og.
fer nconjugatedlectins.
riti
liposome
formation.
D)
thefreeze
fracturetechnique.
E)
SDS-PAGE.
8)
Whichof
the
following
isasterollikelipid
associated
withthe
cell
membran
eof
prokaryot
es?
8)
____ ___
sar
t at
ee
ho panoids
palmitate
D)
phytosterol
E)
linoleate
9)
Basedon
your
knowledg
eofthe
chemistry
ofthecell
membran
e,which
ofthe
following
compoun
dswould
you
couple
witha
newdrug
inorderto
achieve
better
uptakeby
cells?
9)
____ ___
coh
ayd
rrat
bes
po laraminoacids
several
mannose-6-phosphatemonomers
D)
anyhydrophilic substance
E)
lipids
10)
A
prokaryoti
c
organism
isisolated
froma
glacier,
whereit
hasbeen
observed
tobe
thriving.
Basedon
your
knowledg
eofthe
plasma
membran
e,you
would
expectto
finda
predomin
anceof
10)
____ __
ed
quns
uatu
arat
l ed
fatt
ay
m
aci
ods,
uas
nlon
t g
sas
the
ocha
f in
wa
ss
aclo
t se
uto
r 12
acar
t bo
ens
din
len
agth
n.
cel lltodefinethecell,as
l thecellmembrane
wa __
w
ter
a
et
diffusion?
11)
____ wouldnotbepresent.
largely
unsaturatedfattyacids.
D)
largely
saturatedfattyacids.
E)
noneofthe
11)
above
Whichof
the
following
molecules
would
NOT
readily
crossan
intactcell
membran
eby
simple hanol
fattyacids
D)
glucose
E)
oxygen
12)
Whichis
NOTa
modelfor
membran
e
structure?
12)
____ __
W
nd
aCri
t ck
sdo
oubl
ne
hel
aix
La ngmuirmonolayer
Singerand
Nicholsonfluidmosaic
D)
Overtonlipid coat
E)
Gorterand
13)
Grendelbilayer
Temperat
urehasa
dramatic
effect
uponcell
membran
es.This
influence
can
readily
makea
cell
membran
emore
solidor
more
fluidin
response
tothe
temperatu
re.Thisis
an
example
of
13)
____ __
m
ane
easy
m
m
bme
r try.
liq uidation.
scanning
calorimetry.
D)
membrane
flexibility.
E)
phasetransition.
14)
Inactivati
onofa
fluorescen
tdyeina
very
concentrat
edspoton
acellso
thatthe
fluidityof
membran
esis
visualized
iscalled
14)
____ __
pobl
heac
ohin
t g.
lip osomeformation.
ferritin
conjugatedlectins.
D)
SDS-PAGE.
E)
thefreeze
fracturetechnique.
15)
Localized
regionsof
membran
elipids
that
contain
proteins
involved
incell
signaling
are
knownas
15)
____ __
l id
i raft
ps.
ho panoids.
islandsof
hydropathy.
D)
membrane
leaflets.
E)
homeoviscous adaptation.
SHORTANSWER.Writethewordorphrasethatbestcompleteseachstatementoranswersthequestion.
16)
The
presence
oftrans
fatsin
membran
es
________
the
transition
temperatu
reand
________
membran
efluidity.
16)
Incre ase,Decrease
1
7
)
The
shiftingof
membran
efluidity
froma
gel-liketo
amore
liquid
stateis
knownas
________
.
17)
Phas etransition
1
8
)
________
isthe
nameof
the
technique
usedfor
the
analysis
of
membran
elipids.
18)
Thin LayerChromatograph
1
9
)
The
current
understan
dingof
the
membran
esofthe
cellis
basedon
the
________
model.
19)
Fluid mosaic
2
0
)
Substance
sthatcan
readily
pass
through
thecell
membran
eare
chemicall
y
________
innature.
20)
hydr ophobic
2
1
)
The
technique
of
transferri
ng
proteins
from
SDSPAGE
gelsonto
a
membran
eand
using
labeled
antibodies
toidentify
particular
proteinsis
knownas
a(n)
________
.
21)
West ernBlotting
2
2
)
Most
unsaturate
dfatty
acidsare
inthe
________
configurat
ion,but
someare
inthe
________
configurat
ion,
making
their
shape
morelike
thatof
saturated
fatty
acids.
22)
Cis, trans
2
3
)
Transme
mbrane
proteins
involved
in
detecting
external
stimuli
and
relaying
that
informati
ontothe
cellare
most
likely
________
proteins.
23)
Integ ral
2
4
)
InE.coli
the
enzyme
responsibl
efor
creating
unsaturate
dbonds
from
saturated
onesin
thefatty
acidsof
thecell
membran
eis
________
.
24)
desat urase
2
5
)
________
isasterol
associated
with
fungal
cell
membran
es.
25)
ergo sterol