Lehninger Principles of Biochemistry 5th Edition: Foundational Concepts

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Chapter 1 The Foundations of Biochemistry
D D D D




Multiple Choice Questions
D D




1. CellularDfoundations
Pages:D2-4D Difficulty:D1 Ans:DC
InDaDbacterialDcell,DtheDDNADisDinDthe:

A) cellDenvelope.
B) cellDmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.

2. CellularDfoundations
Page:D3 Difficulty:D1 Ans:DE
ADmajorDchangeDoccurringDinDtheDevolutionDofDeukaryotesDfromDprokaryotesDwasDtheDdevelopmentDof:

A) DNA.
B) photosyntheticDcapability.
C) plasmaDmembranes.
D) ribosomes.
E) theDnucleus.

3. CellularDfoundations
Page:D3 Difficulty:D1 Ans:DB
InDeukaryotes,DtheDnucleusDisDenclosedDbyDaDdoubleDmembraneDcalledDthe:

A) cellDmembrane.
B) nuclearDenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.

4. CellularDfoundations
Page:D4 Difficulty:D1 Ans:DC
TheDdimensionsDofDlivingDcellsDareDlimited,DonDtheDlowerDendDbyDtheDminimumDnumberDofDbiomoleculesDnece
ssaryDforDfunction,DandDonDtheDupperDendDbyDtheDrateDofDdiffusionDofDsolutesDsuchDasDoxygen.
ExceptDforDhighlyDelongatedDcells,DtheyDusuallyDhaveDlengthsDandDdiametersDinDtheDrangeDof:

A) 0.1DmDtoD10Dm.
B) 0.3DmDtoD30Dm.
C) 0.3DmDtoD100Dm.
D) 1DmDtoD100Dm.
E) 1DmDtoD300Dm.

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2 ChapterD1D TheDFoundationsDofDBiochemistry


5. CellularDfoundations
Page:D4 Difficulty:D2 Ans:DB
WhichDgroupDofDsingle-celledDmicro-
organismsDhasDmanyDmembersDfoundDgrowingDinDextremeDenvironments?

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

6. CellularDfoundations
Page:D5 Difficulty:D2 Ans:DB
TheDbacteriumDE.DcoliDrequiresDsimpleDorganicDmoleculesDforDgrowthDandDenergy—itDisDthereforeDa:

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

7. CellularDfoundations
Page:D6-8 Difficulty:D2 Ans:DB
WhichDoneDofDtheDfollowingDhasDtheDcellularDcomponentsDarrangedDinDorderDofDincreasingDsize?

A) AminoDacidD<DproteinD<DmitochondrionD<Dribosome
B) AminoDacidD<DproteinD<DribosomeD<Dmitochondrion
C) AminoDacidD<DribosomeD<DproteinD<Dmitochondrion
D) ProteinD<DaminoDacidD<DmitochondrionD<Dribosome
E) ProteinD<DribosomeD<DmitochondrionD<DaminoDacid

8. CellularDfoundations
Page:D10 Difficulty:D2 Ans:DA
TheDthree-
dimensionalDstructureDofDmacromoleculesDisDformedDandDmaintainedDprimarilyDthroughDnoncovalentDi
nteractions.D WhichDoneDofDtheDfollowingDisDnotDconsideredDaDnoncovalentDinteraction?

A) carbon-carbonDbonds
B) hydrogenDbonds
C) hydrophobicDinteractions
D) ionicDinteractions
E) vanDderDWaalsDinteractions

9. ChemicalDfoundations
Page:D11 Difficulty:D2 Ans:DE
WhichDoneDofDtheDfollowingDisDnotDamongDtheDfourDmostDabundantDelementsDinDlivingDorganisms?

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

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ChapterD1D TheDFoundationsDofDBiochemistr 3
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10. ChemicalDfoundations
Page:D12-13 Difficulty:D1 Ans:DB
TheDfourDcovalentDbondsDinDmethaneD(CH4)DareDarrangedDaroundDcarbonDtoDgiveDwhichDoneDofDtheDfol
lowingDgeometries?

A) linear
B) tetrahedral
C) trigonalDbipyramidal
D) trigonalDplanar
E) trigonalDpyramidal

11. ChemicalDfoundations
Page:D12 Difficulty:D1 Ans:DB
WhatDfunctionalDgroupsDareDpresentDonDthisDmolecule?




A) etherDandDaldehyde
B) hydroxylDandDaldehyde
C) hydroxylDandDcarboxylicDacid
D) hydroxylDandDester
E) hydroxylDandDketone

12. ChemicalDfoundations
Page:D14 Difficulty:D1 Ans:DD
TheDmacromoleculesDthatDserveDinDtheDstorageDandDtransmissionDofDgeneticDinformationDare:

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

13. ChemicalDfoundations
Page:D16 Difficulty:D1 Ans:DD
StereoisomersDthatDareDnonsuperimposableDmirrorDimagesDofDeachDotherDareDknownDas:

A) anomers.
B) cis-transDisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricDisomers.