Test Bank for Lehninger Principles of Biochemistry 8th Edition by David L. Nelson and Michael M. Cox | Updated MCQs with Verified Answers | Complete Chapters & A+ Grades Guaranteed

Page1

,1. Inabacterialcell,theDNAisinthe:
A) cellenvelope.
B) cellmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.


2. Amajorchangeoccurringintheevolutionofeukaryotesfromprokaryoteswasthe
developmentof:
f




A) DNA.
B) photosyntheticcapability.
C) plasmamembranes.
D) ribosomes.
E) thenucleus.


3. Ineukaryotes,thenucleusisenclosedbyadoublemembranecalledthe:
A) cellmembrane.
B) nuclearenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. Thedimensionsoflivingcellsarelimited,onthelowerendbytheminimumnumberof
biomoleculesnecessaryforfunction,andontheupperendbytherateofdiffusionof
f B




solutessuchasoxygen.Exceptforhighlyelongatedcells,theyusuallyhavelengthsand
f




diametersintherangeof:
f




A) 0.1m to10m.
B




B) 0.3m to30m.
B




C) 0.3m to100m.
B




D) 1m to100m.
B




E) 1m to300m.
B




Page3

,5. Whichgroupofsingle-celledmicroorganismshasmanymembersfoundgrowingin
f




extremeenvironments?
f




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


6. ThebacteriumE.colirequiressimpleorganicmoleculesforgrowthandenergy—itis
thereforea:
f




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


7. Whichisalistoforganelles?
A) mitochondria,chromatin,endoplasmicreticulum
B) peroxisomes,lysosomes,plasmamembrane
C) proteasomes,peroxisomes,lysosomes
D) mitochondria,endoplasmicreticulum,peroxisomes
E) Alloftheanswersarecorrect.


8. WhichlisthasthecellularcomponentsarrangedinorderofINCREASINGsize?
B V




A) aminoacid<protein<mitochondrion<ribosome
B) aminoacid<protein<ribosome<mitochondrion
C) aminoacid<ribosome<protein<mitochondrion
D) protein<aminoacid<mitochondrion<ribosome
E) protein<ribosome<mitochondrion<aminoacid


9. Thethree-dimensionalstructureofmacromoleculesisformedandmaintainedprimarily
throughnoncovalentinteractions. WhichoneofthefollowingisNOTconsidereda
f f




noncovalentinteraction?
f




A) carbon-carbonbonds
B) hydrogenbonds
C) hydrophobicinteractions
D) ionicinteractions
E) van derWaalsinteractions
B




Page4

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


11. Thefourcovalentbondsinmethane(CH4)arearrangedaroundcarbontogivewhich
geometry?
f




A) linear
B) tetrahedral
C) trigonalbipyramidal
D) trigonalplanar
E) trigonalpyramidal


12. Whatfunctionalgroupsarepresentonthismolecule?




A) etherandaldehyde
B) hydroxylandaldehyde
C) hydroxylandcarboxylicacid
D) hydroxylandester
E) hydroxylandketone


13. Themacromoleculesthatserveinthestorageandtransmissionofgeneticinformation
are:
f




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


14. Stereoisomersthatarenonsuperimposablemirrorimagesofeachotherareknownas:
A) anomers.
B) cis-transisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricisomers.



Page5