TEST BANK FOR lehninger_principles_of_biochemistry_5th__edition__

,Chapter 1 The Foundations of Biochemistry
H H H H




Multiple Choice Questions
H H




1. CellularHfoundations
Pages:H2-4H Difficulty:H1 Ans:HC
InHaHbacterialHcell,HtheHDNAHisHinHthe:

A) cellHenvelope.
B) cellHmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.

2. CellularHfoundations
Page:H3 Difficulty:H1 Ans:HE
AHmajorHchangeHoccurringHinHtheHevolutionHofHeukaryotesHfromHprokaryotesHwasHtheHdevelopmentHof:

A) DNA.
B) photosyntheticHcapability.
C) plasmaHmembranes.
D) ribosomes.
E) theHnucleus.

3. CellularHfoundations
Page:H3 Difficulty:H1 Ans:HB
InHeukaryotes,HtheHnucleusHisHenclosedHbyHaHdoubleHmembraneHcalledHthe:

A) cellHmembrane.
B) nuclearHenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.

4. CellularHfoundations
Page:H4 Difficulty:H1 Ans:HC
TheHdimensionsHofHlivingHcellsHareHlimited,HonHtheHlowerHendHbyHtheHminimumHnumberHofHbiomoleculesHnece
ssaryHforHfunction,HandHonHtheHupperHendHbyHtheHrateHofHdiffusionHofHsolutesHsuchHasHoxygen.
ExceptHforHhighlyHelongatedHcells,HtheyHusuallyHhaveHlengthsHandHdiametersHinHtheHrangeHof:

A) 0.1HμmHtoH10Hμm.
B) 0.3HμmHtoH30Hμm.
C) 0.3HμmHtoH100Hμm.
D) 1HμmHtoH100Hμm.
E) 1HμmHtoH300Hμm.

,2 ChapterH1H TheHFoundationsHofHBiochemist
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5. CellularHfoundations
Page:H4 Difficulty:H2 Ans:HB
WhichHgroupHofHsingle-celledHmicro-
organismsHhasHmanyHmembersHfoundHgrowingHinHextremeHenvironments?

A) bacteria.
B) archaea.
C) eukaryotes.
D) heterotrophs.
E) noneHofHtheHabove.

6. CellularHfoundations
Page:H5 Difficulty:H2 Ans:HB
TheHbacteriumHE.HcoliHrequiresHsimpleHorganicHmoleculesHforHgrowthHandHenergy—itHisHthereforeHa:

F) chemoautotroph.
G) chemoheterotroph.
H) lithotroph.
I) photoautotroph.
J) photoheterotroph.

7. CellularHfoundations
Page:H6-8 Difficulty:H2 Ans:HB
WhichHoneHofHtheHfollowingHhasHtheHcellularHcomponentsHarrangedHinHorderHofH increasingHsize?

A) AminoHacidH<HproteinH<HmitochondrionH<Hribosome
B) AminoHacidH<HproteinH<HribosomeH<Hmitochondrion
C) AminoHacidH<HribosomeH<HproteinH<Hmitochondrion
D) ProteinH<HaminoHacidH<HmitochondrionH<Hribosome
E) ProteinH<HribosomeH<HmitochondrionH<HaminoHacid

8. CellularHfoundations
Page:H10 Difficulty:H2 Ans:HA
TheHthree-
dimensionalHstructureHofHmacromoleculesHisHformedHandHmaintainedHprimarilyHthroughHnoncovalentHi
nteractions.H WhichHoneHofHtheHfollowingHisHnotHconsideredHaHnoncovalentHinteraction?

A) carbon-carbonHbonds
B) hydrogenHbonds
C) hydrophobicHinteractions
D) ionicHinteractions
E) vanHderHWaalsHinteractions

9. ChemicalHfoundations
Page:H11 Difficulty:H2 Ans:HE
WhichHoneHofHtheHfollowingHisHnotHamongHtheHfourHmostHabundantHelementsHinHlivingHorganisms?

A) Carbon
B) Hydrogen
C) Nitrogen
D) Oxygen
E) Phosphorus

, ChapterH1H TheHFoundationsHofHBiochemist 3
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10. ChemicalHfoundations
Page:H12-13 Difficulty:H1 Ans:HB
TheHfourHcovalentHbondsHinHmethaneH(CH4)HareHarrangedHaroundHcarbonHtoHgiveHwhichHoneHofHtheHfol
lowingHgeometries?

A) linear
B) tetrahedral
C) trigonalHbipyramidal
D) trigonalHplanar
E) trigonalHpyramidal

11. ChemicalHfoundations
Page:H12 Difficulty:H1 Ans:HB
WhatHfunctionalHgroupsHareHpresentHonHthisHmolecule?




A) etherHandHaldehyde
B) hydroxylHandHaldehyde
C) hydroxylHandHcarboxylicHacid
D) hydroxylHandHester
E) hydroxylHandHketone

12. ChemicalHfoundations
Page:H14 Difficulty:H1 Ans:HD
TheHmacromoleculesHthatHserveHinHtheHstorageHandHtransmissionHofHgeneticHinformationHare:

A) carbohydrates.
B) lipids.
C) membranes.
D) nucleicHacids.
E) proteins.

13. ChemicalHfoundations
Page:H16 Difficulty:H1 Ans:HD
StereoisomersHthatHareHnonsuperimposableHmirrorHimagesHofHeachHotherHareHknownHas:

A) anomers.
B) cis-transHisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricHisomers.