Test Bank -for Lehninger Principles of Biochemistry Eighth Edition by David Nelson Michael Cox All Chapters Complete Guide A+

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Multipleg Choiceg Questions

1. Cellularg foundations
Pages:g3-4g Difficulty:g1 Ans:gC
Ingagbacterialgcell,gthegDNAgisgingthe:

A) cellgenvelope.
B) cellg membrane.
C) nucleoid.
D) nucleus.
E) ribosomes.

2. Cellularg foundations
Page:g 4 Difficulty:g 1 Ans:g E
Agmajorgchangegoccurringgingtheg evolutiongofgeukaryotesgfromgprokaryotesgwasgthegdeve

A) DNA.
B) photosynthetic g capability.
C) plasmagmembranes.
D) ribosomes.
E) thegnucleus.

3. Cellularg foundations
Page:g 4 Difficulty:g 1 Ans:g B
Ingeukaryotes,gthegnucleusgisgenclosedgbygag doublegmembranegcalledgthe:

A) cellg membrane.
B) nucleargenvelope. @theb
C) nucleolus.
D) nucleoplasm.
E) nucleosome.

4. Cellularg foundations
Page:g4 Difficulty:g 1 Ans:gC
Thegdimensionsgofglivinggcellsgareglimited,gongtheg lowergendgbygthegminimumgnumberg o
gnecessarygforgfunction,gandgongtheg uppergendgbygthegrateg ofgdiffusiongofgsolutesgsuchga

Exceptgforghighlygelongatedgcells,gtheygusuallyghaveglengthsgandgdiametersgingtheg rangeg

A) 0.1gµmgtog10g µm.
B) 0.3gµmgtog30g µm.
C) 0.3gµmgtog100g µm.
D) 1gµmgtog100g µm.

,2 Chapterg 1g g Theg Foundationsg
y


5. Cellularg foundations
Page:g 5 Difficulty:g 2 Ans:g B
ThegbacteriumgE.gcoligrequiresgsimplegorganicgmoleculesgforggrowthgandg energy—itgisgth

A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.

6. Cellularg foundations
Page:g 10 Difficulty:g 2 Ans:g B
Whichgonegofgthegfollowingghasgthegcellulargcomponentsgarrangedgingordergofg increasing

A) Aminogacidg<gproteing<g mitochondriong<gribosome
B) Aminogacidg<gproteing<g ribosomeg<gmitochondrion
C) Aminogacidg<gribosomeg<g proteing<gmitochondrion
D) Proteing<gaminogacidg<g mitochondriong<gribosome
E) Proteing<gribosomeg<gmitochondriong<gaminogacid

7. Cellularg foundations
Page:g 11 Difficulty:g 2 Ans:g A
Thegthree-
dimensionalgstructuregofgmacromoleculesgisgformedgandgmaintainedgprimarilygthroughgn
teractions.g Whichgonegofgthegfollowinggisg notgconsideredgagnoncovalentginteraction?

A) carbon-carbon g bonds
B) hydrogengbonds
C) hydrophobicginteractions
D) ionicginteractions
E) vangdergWaalsginteractions

8. Chemicalgfoundations
Page:g 12 Difficulty:g 2 Ans:g E
Whichgonegofgthegfollowinggisg notgamonggthegfourg mostgabundantgelementsginglivinggorg

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

9. Chemicalgfoundations
Page:g 13 Difficulty:g 1 Ans:g B
Thegfourgcovalentgbondsgingmethaneg(CHg4)garegarrangedgaroundgcarbongtoggivegwhichgo
wingggeometries?

, Chapterg 1g g Theg Foundationsg ofg Biochemistr
y


10. Chemicalgfoundations
Page:g 14 Difficulty:g 1 Ans:g B
Whatgfunctionalggroupsgaregpresentgongthisgmolecule?




A) ethergandgaldehyde
B) hydroxylg andg aldehyde
C) hydroxylgandgcarboxylicgacid
D) hydroxylg andg ester
E) hydroxylg andg ketone

11. Chemicalgfoundations
Page:g 16 Difficulty:g 1 Ans:g D
Thegmacromoleculesgthatgservegingthegstorageg andgtransmissiongofggeneticginformationga

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

12. Chemicalgfoundations
Page:g 17 Difficulty:g 1 Ans:g D
Stereoisomersgthatgaregnonsuperimposablegmirrorgimagesgofgeachgotherg aregknowngas:

A) anomers.
B) cis-transgisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricg isomers.

13. Chemicalgfoundations
Page:g 20 Difficulty:g 3 Ans:g E
Thegenzymegfumarasegcatalyzesgtheg reversibleghydrationgofgfumaricgacidgtogl-
malate,g butgitgwillgnotgcatalyzegtheghydrationgofgmaleicgacid,gthegcisgisomergofgfumaric
angexamplegof:

A) biologicalgactivity.
B) chiralgactivity.
C) racemization.
D) stereoisomerization.
E) stereospecificity.