Test Bank - Lehninger Principles of Biochemistry, 7th, & 8th Edition by Nelson, All Chapters.pdf

,1. Inlalbacteriallcell,lthelDNAlislinlthe:
A) celllenvelope.
B) celllmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.


2. Almajorlchangeloccurringlinlthelevolutionlofleukaryoteslfromlprokaryoteslwaslthe
developmentlof:
A) DNA.
B) photosyntheticlcapability.
C) plasmalmembranes.
D) ribosomes.
E) thelnucleus.


3. Inleukaryotes,lthelnucleuslislenclosedlbylaldoublelmembranelcalledlthe:
A) celllmembrane.
B) nuclearlenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. Theldimensionslofllivinglcellslarellimited,lonlthellowerlendlbylthelminimumlnumberloflbiom
oleculeslnecessarylforlfunction,landlonlthelupperlendlbylthelratelofldiffusionloflsoluteslsuchl
asloxygen.lExceptlforlhighlylelongatedlcells,ltheylusuallylhavellengthslandldiameterslinlthelr
angelof:
A) 0.1lmltol10lm.
B) 0.3lmltol30lm.
C) 0.3lmltol100lm.
D) 1lmltol100lm.
E) 1lmltol300lm.


5. Whichlgrouploflsingle-celledlmicroorganismslhaslmanylmemberslfoundlgrowinglin
extremelenvironments?
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) Noneloflthelanswerslislcorrect.




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, 6. ThelbacteriumlE.lcolilrequireslsimplelorganiclmoleculeslforlgrowthlandlenergyóitlis
thereforela:
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.


7. Whichlislallistloflorganelles?
A) mitochondria,lchromatin,lendoplasmiclreticulum
B) peroxisomes,llysosomes,lplasmalmembrane
C) proteasomes,lperoxisomes,llysosomes
D) mitochondria,lendoplasmiclreticulum,lperoxisomes
E) Allloflthelanswerslarelcorrect.


8. WhichllistlhaslthelcellularlcomponentslarrangedlinlorderloflINCREASINGlsize?
A) aminolacidl<lproteinl<lmitochondrionl<lribosome
B) aminolacidl<lproteinl<lribosomel<lmitochondrion
C) aminolacidl<lribosomel<lproteinl<lmitochondrion
D) proteinl<laminolacidl<lmitochondrionl<lribosome
E) proteinl<lribosomel<lmitochondrionl<laminolacid


9. Thelthree-
dimensionallstructureloflmacromoleculeslislformedlandlmaintainedlprimarilylthroughlnonc
ovalentlinteractions.l WhichloneloflthelfollowinglislNOTlconsideredla
noncovalentlinteraction?
A) carbon-carbonlbonds
B) hydrogenlbonds
C) hydrophobiclinteractions
D) ioniclinteractions
E) vanlderlWaalslinteractions


10. WhichlelementlislNOTlamonglthelfourlmostlabundantlinllivinglorganisms?
A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus




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, 11. Thelfourlcovalentlbondslinlmethanel(CH4)larelarrangedlaroundlcarbonltolgivelwhichlgeo
metry?
A) linear
B) tetrahedral
C) trigonallbipyramidal
D) trigonallplanar
E) trigonallpyramidal


12. Whatlfunctionallgroupslarelpresentlonlthislmolecule?




A) etherlandlaldehyde
B) hydroxyllandlaldehyde
C) hydroxyllandlcarboxyliclacid
D) hydroxyllandlester
E) hydroxyllandlketone


13. Thelmacromoleculeslthatlservelinlthelstoragelandltransmissionloflgeneticlinformation
are:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleiclacids.
E) proteins.


14. Stereoisomerslthatlarelnonsuperimposablelmirrorlimageslofleachlotherlarelknownlas:
A) anomers.
B) cis-translisomers.
C) diastereoisomers.
D) enantiomers.
E) geometriclisomers.




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