Lehninger Principles of Biochemistry 7th Edition Test Bank – Chapter Questions & Answers

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ChapterV1.VTheVFoundationsVofVBiochemistryV(A
nswersVareVatVtheVEndVofVEachVChapter)
1. InVaVbacterialVcell,VtheVDNAV isVinVthe:
A) cellVenvelope.
B) cellVmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.


2. AVmajorVchangeVoccurringVinVtheVevolutionVofVeukaryotesVfromVprokaryotesV
wasVtheVdevelopmentVof:
A) DNA.
B) photosyntheticVcapability.
C) plasmaVmembranes.
D) ribosomes.
E) theVnucleus.


3. InVeukaryotes,VtheVnucleusVisVenclosedVbyVaVdoubleVmembraneVcalledVthe:
A) cellVmembrane.
B) nuclearVenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. TheVdimensionsVofVlivingVcellsVareVlimited,VonVtheVlowerVendVbyVtheVminimumVnu
mberVofVbiomoleculesVnecessaryVforVfunction,VandVonVtheVupperVendVbyVtheVrateV
ofVdiffusionVofVsolutesVsuchVasVoxygen.VExceptVforVhighlyVelongatedVcells,VtheyVus
uallyVhaveVlengthsVandVdiametersVinVtheVrangeVof:
A) 0.1VmVtoV10Vm.
B) 0.3VmVtoV30Vm.
C) 0.3VmVtoV100Vm.
D) 1VmVtoV100Vm.
E) 1VmVtoV300Vm.


5. WhichVgroupVofVsingle-
celledVmicroorganismsVhasVmanyVmembersVfoundVgrowingVinVextremeVenviron
ments?
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) NoneVofVtheVanswersVisVcorrect.

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6. TheVbacteriumVE.VcoliVrequiresVsimpleVorganicVmoleculesVforVgrowthVandVenergy
—itVisVthereforeVa:
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.


7. WhichVisVaVlistVofVorganelles?
A) mitochondria,Vchromatin,VendoplasmicVreticulum
B) peroxisomes,Vlysosomes,VplasmaVmembrane
C) proteasomes,Vperoxisomes,Vlysosomes
D) mitochondria,VendoplasmicVreticulum,Vperoxisomes
E) AllVofVtheVanswersVareVcorrect.


8. WhichVlistVhasVtheVcellularVcomponentsVarrangedVinVorderVofVINCREASINGVsize?
A) aminoVacidV<VproteinV<VmitochondrionV<Vribosome
B) aminoVacidV<VproteinV<VribosomeV<Vmitochondrion
C) aminoVacidV<VribosomeV<VproteinV<Vmitochondrion
D) proteinV<VaminoVacidV<VmitochondrionV<Vribosome
E) proteinV<VribosomeV<VmitochondrionV<VaminoVacid


9. TheVthree-
dimensionalVstructureVofVmacromoleculesVisVformedVandVmaintainedVprimarilyVthro
ughVnoncovalentVinteractions.VWhichVoneVofVtheVfollowingVisVNOTVconsideredVaV
noncovalentVinteraction?
A) carbon-carbonVbonds
B) hydrogenVbonds
C) hydrophobicVinteractions
D) ionicVinteractions
E) vanVderVWaalsVinteractions


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




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11. TheVfourVcovalentVbondsVinVmethaneV(CH4)VareVarrangedVaroundVcarbonVtoVgive
VwhichVgeometry?
A) linear
B) tetrahedral
C) trigonalVbipyramidal
D) trigonalVplanar
E) trigonalVpyramidal


12. WhatVfunctionalVgroupsVareVpresentVonVthisVmolecule?




A) etherVandV aldehyde
B) hydroxylVandValdehyde
C) hydroxylVandVcarboxylicVacid
D) hydroxylVandVester
E) hydroxylVandVketone


13. TheVmacromoleculesVthatVserveVinVtheVstorageVandVtransmissionVofVgeneticVinfor
mationVare:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleicVacids.
E) proteins.


14. StereoisomersVthatVareVnonsuperimposableVmirrorVimagesVofVeachVotherVareVknownVas:
A) anomers.
B) cis-transVisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricVisomers.


15. TheVcatalogVofVallVproteinsVfunctioningVinVaVcellVisVthe:
A) metabolome.
B) proteasome.
C) lysosome.
D) proteome.
E) genome.



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