, CLICK HERE x
Multiple Choice Questions
x x
1. Cellular x foundations
Pages:x3-4x Difficulty: x 1 Ans:xC
Inxaxbacterial xcell, xthexDNAxisxinxthe:
A) cell xenvelope.
B) cell xmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.
2. Cellular x foundations
Page:x 4 Difficulty:x 1 Ans:x E
Axmajor xchangexoccurring xin xthex evolutionxof xeukaryotes xfrom xprokaryotes xwasxthe xdevelop
A) DNA.
B) photosynthetic x capability.
C) plasmaxmembranes.
D) ribosomes.
E) thexnucleus.
3. Cellular x foundations
Page:x 4 Difficulty:x 1 Ans:x B
Inxeukaryotes,xthe xnucleusxis xenclosed xby xax double xmembranexcalled xthe:
A) cell xmembrane.
B) nuclear xenvelope. @theb
C) nucleolus.
D) nucleoplasm.
E) nucleosome.
4. Cellular x foundations
Page:x4 Difficulty:x 1 Ans:xC
Thexdimensions x ofxliving x cells xarexlimited,x onx the x lower xendx byx thex minimumx number x of x bio
essaryxforx function, xand x onx thex upper xendx by xthe xratex ofx diffusion x of xsolutesx such xasx oxygen
Exceptxforx highlyx elongatedxcells,x theyx usuallyx havexlengthsx andx diametersxin xthex rangex of:
A) 0.1xµmxto x 10x µm.
B) 0.3xµmxto x 30x µm.
C) 0.3xµmxto x 100 x µm.
D) 1xµmxtox 100 xµm.
,2 Chapterx 1 x x Thex Foundationsx of
5. Cellular x foundations
Page:x 5 Difficulty:x 2 Ans:x B
Thexbacterium x E.x colixrequires xsimplex organicx moleculesxforxgrowthxandx energy—itxisxthere
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.
6. Cellular x foundations
Page:x 10 Difficulty:x 2 Ans:x B
Whichxonexofxthexfollowing xhas xthex cellular xcomponentsxarranged xin xorder xofx increasingx siz
A) Aminoxacidx<xproteinx<x mitochondrionx<xribosome
B) Aminoxacidx<xproteinx<xribosomex<xmitochondrion
C) Aminoxacidx<xribosomex<xproteinx<xmitochondrion
D) Protein x <x amino xacid x < x mitochondrionx < xribosome
E) Protein x< xribosomex <x mitochondrionx <xaminoxacid
7. Cellular x foundations
Page:x 11 Difficulty:x 2 Ans:x A
Thexthree-
dimensional x structurex ofx macromoleculesxisx formedx andx maintained x primarilyx through x non
actions.x Whichx onex ofx thexfollowing xisx notxconsideredxax noncovalentxinteraction?
A) carbon-carbonx bonds
B) hydrogenx bonds
C) hydrophobicxinteractions
D) ionicxinteractions
E) vanxderx Waalsxinteractions
8. Chemicalxfoundations
Page:x 12 Difficulty:x 2 Ans:x E
Whichx onex ofx thexfollowing xisx notx among xthexfour x mostxabundantxelementsxinxliving xorganis
A) Carbon
B) Hydrogen
C) Nitrogen
D) Oxygen
E) Phosphorus
9. Chemicalxfoundations
Page:x 13 Difficulty:x 1 Ans:x B
Thexfourx covalentx bondsxinx methanex(CH x4)x are xarrangedx aroundxcarbonx toxgivex whichx onex o
xgeometries?
, Chapterx 1 x x Thex Foundationsx of x Biochemistry
10. Chemicalxfoundations
Page:x 14 Difficulty:x 1 Ans:x B
Whatxfunctional xgroupsxare xpresent xonxthis xmolecule?
A) ether xandxaldehyde
B) hydroxylx andx aldehyde
C) hydroxyl xandxcarboxylic xacid
D) hydroxylx andx ester
E) hydroxylx andx ketone
11. Chemicalxfoundations
Page:x 16 Difficulty:x 1 Ans:x D
Thexmacromoleculesxthat xserve xinxthexstoragex and xtransmissionxofxgeneticxinformationxare:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleic xacids.
E) proteins.
12. Chemicalxfoundations
Page:x 17 Difficulty:x 1 Ans:x D
Stereoisomers xthatxarex nonsuperimposablexmirror ximagesx of xeachx other x arexknown xas:
A) anomers.
B) cis-trans xisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricx isomers.
13. Chemicalxfoundations
Page:x 20 Difficulty:x 3 Ans:x E
Thexenzyme xfumarasexcatalyzesx thex reversiblex hydration x of xfumaricx acid x toxl-
malate,x butxitx willx notxcatalyzexthe xhydrationxof xmaleic xacid, xthe xcisxisomer xof xfumaric xaci
amplexof:
A) biological xactivity.
B) chiral xactivity.
C) racemization.
D) stereoisomerization.
E) stereospecificity.
Multiple Choice Questions
x x
1. Cellular x foundations
Pages:x3-4x Difficulty: x 1 Ans:xC
Inxaxbacterial xcell, xthexDNAxisxinxthe:
A) cell xenvelope.
B) cell xmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.
2. Cellular x foundations
Page:x 4 Difficulty:x 1 Ans:x E
Axmajor xchangexoccurring xin xthex evolutionxof xeukaryotes xfrom xprokaryotes xwasxthe xdevelop
A) DNA.
B) photosynthetic x capability.
C) plasmaxmembranes.
D) ribosomes.
E) thexnucleus.
3. Cellular x foundations
Page:x 4 Difficulty:x 1 Ans:x B
Inxeukaryotes,xthe xnucleusxis xenclosed xby xax double xmembranexcalled xthe:
A) cell xmembrane.
B) nuclear xenvelope. @theb
C) nucleolus.
D) nucleoplasm.
E) nucleosome.
4. Cellular x foundations
Page:x4 Difficulty:x 1 Ans:xC
Thexdimensions x ofxliving x cells xarexlimited,x onx the x lower xendx byx thex minimumx number x of x bio
essaryxforx function, xand x onx thex upper xendx by xthe xratex ofx diffusion x of xsolutesx such xasx oxygen
Exceptxforx highlyx elongatedxcells,x theyx usuallyx havexlengthsx andx diametersxin xthex rangex of:
A) 0.1xµmxto x 10x µm.
B) 0.3xµmxto x 30x µm.
C) 0.3xµmxto x 100 x µm.
D) 1xµmxtox 100 xµm.
,2 Chapterx 1 x x Thex Foundationsx of
5. Cellular x foundations
Page:x 5 Difficulty:x 2 Ans:x B
Thexbacterium x E.x colixrequires xsimplex organicx moleculesxforxgrowthxandx energy—itxisxthere
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.
6. Cellular x foundations
Page:x 10 Difficulty:x 2 Ans:x B
Whichxonexofxthexfollowing xhas xthex cellular xcomponentsxarranged xin xorder xofx increasingx siz
A) Aminoxacidx<xproteinx<x mitochondrionx<xribosome
B) Aminoxacidx<xproteinx<xribosomex<xmitochondrion
C) Aminoxacidx<xribosomex<xproteinx<xmitochondrion
D) Protein x <x amino xacid x < x mitochondrionx < xribosome
E) Protein x< xribosomex <x mitochondrionx <xaminoxacid
7. Cellular x foundations
Page:x 11 Difficulty:x 2 Ans:x A
Thexthree-
dimensional x structurex ofx macromoleculesxisx formedx andx maintained x primarilyx through x non
actions.x Whichx onex ofx thexfollowing xisx notxconsideredxax noncovalentxinteraction?
A) carbon-carbonx bonds
B) hydrogenx bonds
C) hydrophobicxinteractions
D) ionicxinteractions
E) vanxderx Waalsxinteractions
8. Chemicalxfoundations
Page:x 12 Difficulty:x 2 Ans:x E
Whichx onex ofx thexfollowing xisx notx among xthexfour x mostxabundantxelementsxinxliving xorganis
A) Carbon
B) Hydrogen
C) Nitrogen
D) Oxygen
E) Phosphorus
9. Chemicalxfoundations
Page:x 13 Difficulty:x 1 Ans:x B
Thexfourx covalentx bondsxinx methanex(CH x4)x are xarrangedx aroundxcarbonx toxgivex whichx onex o
xgeometries?
, Chapterx 1 x x Thex Foundationsx of x Biochemistry
10. Chemicalxfoundations
Page:x 14 Difficulty:x 1 Ans:x B
Whatxfunctional xgroupsxare xpresent xonxthis xmolecule?
A) ether xandxaldehyde
B) hydroxylx andx aldehyde
C) hydroxyl xandxcarboxylic xacid
D) hydroxylx andx ester
E) hydroxylx andx ketone
11. Chemicalxfoundations
Page:x 16 Difficulty:x 1 Ans:x D
Thexmacromoleculesxthat xserve xinxthexstoragex and xtransmissionxofxgeneticxinformationxare:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleic xacids.
E) proteins.
12. Chemicalxfoundations
Page:x 17 Difficulty:x 1 Ans:x D
Stereoisomers xthatxarex nonsuperimposablexmirror ximagesx of xeachx other x arexknown xas:
A) anomers.
B) cis-trans xisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricx isomers.
13. Chemicalxfoundations
Page:x 20 Difficulty:x 3 Ans:x E
Thexenzyme xfumarasexcatalyzesx thex reversiblex hydration x of xfumaricx acid x toxl-
malate,x butxitx willx notxcatalyzexthe xhydrationxof xmaleic xacid, xthe xcisxisomer xof xfumaric xaci
amplexof:
A) biological xactivity.
B) chiral xactivity.
C) racemization.
D) stereoisomerization.
E) stereospecificity.
