test bank for lehninger principles of biochemistry 7thedition nelson

,1. Ineaebacterialecell,etheeDNAeiseinethe:
A) celleenvelope.
B) cellemembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.


2. Aemajorechangeeoccurringeinetheeevolutioneofeeukaryotesefromeprokaryotesewasethe
developmenteof:
A) DNA.
B) photosyntheticecapability.
C) plasmaemembranes.
D) ribosomes.
E) theenucleus.


3. Ineeukaryotes,etheenucleuseiseenclosedebyeaedoubleemembraneecalledethe:
A) cellemembrane.
B) nucleareenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. Theedimensionseofelivingecellseareelimited,eonetheelowereendebyetheeminimumenumbereofebi
omoleculesenecessaryeforefunction,eandeonetheeuppereendebyetheerateeofediffusioneofesolutes
esucheaseoxygen.eExcepteforehighlyeelongatedecells,etheyeusuallyehaveelengths eandediameter

seinetheerangeeof:
A) 0.1emetoe10em.
B) 0.3emetoe30em.
C) 0.3emetoe100em.
D) 1emetoe100em.
E) 1emetoe300em.


5. Whichegroupeofesingle-celledemicroorganismsehasemanyemembersefoundegrowingein
extremeeenvironments?
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) Noneeofetheeanswerseisecorrect.




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, 6. TheebacteriumeE.ecolierequiresesimpleeorganicemoleculeseforegrowtheandeenergyóiteis
thereforeea:
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.


7. Whicheiseaelisteofeorganelles?
A) mitochondria,echromatin,eendoplasmicereticulum
B) peroxisomes,elysosomes,eplasmaemembrane
C) proteasomes,eperoxisomes,elysosomes
D) mitochondria,eendoplasmicereticulum,eperoxisomes
E) Alleofetheeanswerseareecorrect.


8. WhichelistehasetheecellularecomponentsearrangedeineordereofeINCREASINGesize?
A) aminoeacide<eproteine<emitochondrione<eribosome
B) aminoeacide<eproteine<eribosomee<emitochondrion
C) aminoeacide<eribosomee<eproteine<emitochondrion
D) proteine<eaminoeacide<emitochondrione<eribosome
E) proteine<eribosomee<emitochondrione<eaminoeacid


9. Theethree-
dimensionalestructureeofemacromoleculeseiseformedeandemaintainedeprimarilyethroughenon
covalenteinteractions.e WhicheoneeofetheefollowingeiseNOTeconsideredea
noncovalenteinteraction?
A) carbon-carbonebonds
B) hydrogenebonds
C) hydrophobiceinteractions
D) ioniceinteractions
E) vanedereWaalseinteractions


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




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, 11. Theefourecovalentebondseinemethanee(CH4)eareearrangedearoundecarbonetoegiveewhichege
ometry?
A) linear
B) tetrahedral
C) trigonalebipyramidal
D) trigonaleplanar
E) trigonalepyramidal


12. Whatefunctionalegroupseareepresenteonethisemolecule?




A) ethereandealdehyde
B) hydroxyleandealdehyde
C) hydroxyleandecarboxyliceacid
D) hydroxyleandeester
E) hydroxyleandeketone


13. Theemacromoleculesethateserveeinetheestorageeandetransmissioneofegeneticeinformation
are:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleiceacids.
E) proteins.


14. Stereoisomersethateareenonsuperimposableemirroreimageseofeeacheothereareeknowneas:
A) anomers.
B) cis-transeisomers.
C) diastereoisomers.
D) enantiomers.
E) geometriceisomers.




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