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

,1. Ingagbacterialgcell,gthegDNAgisgingthe
:
A) cellgenvelope.
B) cellgmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.


2. Agmajorgchangegoccurringgingthegevolutiongofgeukaryotesgfromgprokaryotesgwasgth
e
developmentgof:
A) DNA.
B) photosyntheticgcapability.
C) plasmagmembranes.
D) ribosomes.
E) thegnucleus.


3. Ingeukaryotes,gthegnucleusgisgenclosedgbygagdoublegmembranegcalledgthe
:
A) cellgmembrane.
B) nucleargenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. Thegdimensionsgofglivinggcellsgareglimited,gongtheglowergendgbygthegminimumgnumberg
ofgbiomoleculesgnecessarygforgfunction,gandgongtheguppergendgbygthegrategofgdiffusiong
ofgsolutesgsuchgasgoxygen.gExceptgforghighlygelongatedgcells,gtheygusuallyghaveglengths
gandgdiametersgingthegrangegof:
A) 0.1gmgtog10gm.
B) 0.3gmgtog30gm.
C) 0.3gmgtog100gm.
D) 1gmgtog100gm.
E) 1gmgtog300gm.


5. Whichggroupgofgsingle-
celledgmicroorganismsghasgmanygmembersgfoundggrowinggin
extremegenvironments?
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) Nonegofgtheganswersgisgcorrect.

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, 6. ThegbacteriumgE.gcoligrequiresgsimplegorganicgmoleculesgforggrowthgandgenergyóitgi
s
thereforega:
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.


7. Whichgisgaglistgofgorganelles?
A) mitochondria,gchromatin,gendoplasmicgreticulum
B) peroxisomes,glysosomes,gplasmagmembrane
C) proteasomes,gperoxisomes,glysosomes
D) mitochondria,gendoplasmicgreticulum,gperoxisomes
E) Allgofgtheganswersgaregcorrect.


8. WhichglistghasgthegcellulargcomponentsgarrangedgingordergofgINCREASINGgsize
?
A) aminogacidg<gproteing<gmitochondriong<gribosome
B) aminogacidg<gproteing<gribosomeg<gmitochondrion
C) aminogacidg<gribosomeg<gproteing<gmitochondrion
D) proteing<gaminogacidg<gmitochondriong<gribosome
E) proteing<gribosomeg<gmitochondriong<gaminogacid


9. Thegthree-
dimensionalgstructuregofgmacromoleculesgisgformedgandgmaintainedgprimarilygthroughg
noncovalentginteractions.g WhichgonegofgthegfollowinggisgNOTgconsideredga
noncovalentginteraction?
A) carbon-carbongbonds
B) hydrogengbonds
C) hydrophobicginteractions
D) ionicginteractions
E) vangdergWaalsginteractions


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




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, 11. Thegfourgcovalentgbondsgingmethaneg(CH4)garegarrangedgaroundgcarbongtoggivegwhic
hggeometry?
A) linear
B) tetrahedral
C) trigonalgbipyramidal
D) trigonalgplanar
E) trigonalgpyramidal


12. Whatgfunctionalggroupsgaregpresentgongthisgmolecule?




A) ethergandgaldehyde
B) hydroxylgandgaldehyde
C) hydroxylgandgcarboxylicgacid
D) hydroxylgandgester
E) hydroxylgandgketone


13. Thegmacromoleculesgthatgservegingthegstoragegandgtransmissiongofggeneticginformatio
n
are:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleicgacids.
E) proteins.


14. Stereoisomersgthatgaregnonsuperimposablegmirrorgimagesgofgeachgothergaregknowngas
:
A) anomers.
B) cis-transgisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricgisomers.




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