20
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, Chapter1:DNAStructureandFunction d
Multiple Choiceb
Identify thechoicethatbest completesthe statement oranswers thequestion.
b b b b b
A. b 1. Inwhichbodyorcellarea aremostgenesinhumanslocated?
b b b b b
A. Nucleus
B. Mitochondrion
C. Cytoplasm
D. Plasmamembrane
A. b 2. Whichconditionorstatement exemplifiestheconcept ofgenomicsratherthangenetics?
bbb b b d b
A. Thegene forinsulinislocated onchromosome11inallpeople. b b b b b
B. Expressionofanysinglegeneis dependent oninheritingtwo alleles. b b b b b
C. Sex-linkedrecessivedisordersaffect malesmoreoftenthanfemales. b b b
D. Onealleleforeachgene isinheritedfromthemother,andoneisinheritedfrom b b b b
the father.
b b
A. b 3. Whatisthepurposeofphosphorousina DNAstrand?
bb b b b b
A. Linkingthenucleotidesintoa strand b b
B. Holdingcomplementarystrandstogether b b
C. Ensuring thatapurineisalways paired withapyrimidine d b b b b
D. Preventing theseparationofdouble-strandedDNAintosingle-strandedDNA b b b b b
A.
bb 4.What isthetermusedtodefinealternativeformsofagenethat mayresultindifferent
b b b b b b
bexpression ofthe trait coded forbythat gene? b b b b
A. Alleles
B. Bases
C. Centromeres
D. Diploids
D. b 5. Whatpercentageofbasesinastretchofdouble-strandedDNAthat contains30%guanine
b b b b
(G) baseswouldbeadenine(A)?
b
A. 70%
B. 60%
C. 30% b
D. 20%
C. 6. What is the termused todescribe the organized pictureofthe paired chromosomeswithina
b b b b b b b b b b
cell used to determinewhether chromosome numbers, structures, and banding patterns
b b b b b b b b b b
arenormal?
b
A. Pedigree
B. Phenotype
C. Karyotype
D. Autotype
D. b 7. What wouldbethesequenceofDNAthatiscomplementarytoaDNAsectionwiththebase
b b b
sequenceofGGTCAATCCTTAG?
b
A. GATTCCTAACTGG
B. TTGACCGAAGGCT
C. AACTGGCTTCCGA
D. CCAGTTAGGAATC
, B. 8. Whichofthesecomplementarybasepairsformthestrongestor“tightest”association?
b b
A. Adenineandthymine
B. Cytosineandguanine b
C. Guanineandthymine
D. Cytosineandadenine
A 9. WhatactivityoccursduringMphaseofthecellcycle?
b
A. Thecellundergoescytokinesis.
B. Activitystops,and thecell“sleeps.” b b b
C. AllDNAiscompletelyreplicated.
D. Thecellgreatlyincreases proteinsynthesis. b
B. 10. Whichchromosomenumberrepresentstheeuploidstatefornormalhumansomaticcells? b
A. 44
B. 46
C. 47
D. 48
A. 11. Howdoestheproteomediffer fromthegenome? b
A. Theproteomechanges inresponseto intracellularandextracellular signals. b b b b b
B. Thegenomechangesinresponsetointracellular andextracellularsignals. b b b b b
C. Theproteome isstablein somaticcellsandunstableingermcells,whereas
b b b b b b
the genome isstable inbothsomatic cellsand germcells.
b b b b b b
D. Thegenomeis stable insomaticcellsandunstableingermcells,whereas
b b b b
the proteome is stable in bothsomaticcellsandgermcells.
b b b b b
C. 12.
bb What isthemostoutstanding featureofa maturehaploidcell?
b b b b
A. Itisusuallyhomozygous. b
B. Thesexchromosomesaremissingb
C. Onlyonechromosomeofeachpair ispresent. b
D. DNAsynthesisoccursaftermitosis insteadofbefore. b b
D. 13. At whatphaseofthecellcyclearechromosomesvisibleasseparatestructures?
b bb b b bb b b
A. G1
B. G2
C. S
D. M
B. 14. Whichstatement about thecellcyclephaseofG0 istrue?
b d b b bb
A. Hyperplastic growthinplaceofhypertrophicgrowth
b
B. Performanceofspecificdifferentiated functions b b
C. Initiationandcompletion ofnucleokinesis b
D. ReplicationofDNA
B. 15.
b bb What istheresult ofnormalDNAreplication?
b b
A. Formationoftwonewdaughter cells b b
B. Formationoftwo identicalsets ofDNA b b
C. Disappearanceoftheoriginalparent cell b b
D. Activationand attachment ofspindlefibers b b