BIOD 171 MODULE 6 QUESTIONS AND CORRECT ANSWERS

BIOD 171 MODULE 6 QUESTIONS AND
CORRECT ANSWERS
TrueA2orA2False.A2BecauseA2theA2genomeA2isA2containedA2withinA2anA2enclosedA2spaceA2(
muchA2likeA2theA2nucleusA2ofA2aA2cell),A2virusesA2areA2classifiedA2asA2eukaryotic.A2-A2Ans--
False

TrueA2orA2False.A2AlthoughA2virusesA2mayA2containA2theirA2genomeA2withinA2anA2enclosed
A2spaceA2(muchA2likeA2theA2nucleusA2ofA2aA2cell),A2itA2isA2consideredA2neitherA2eukaryoticA2
norA2prokaryotic.A2-A2Ans--True

DescribeA2theA2twoA2basicA2componentsA2ofA2aA2virus.A2-A2Ans--
AA2virusA2hasA2genomicA2materialA2madeA2upA2ofA2eitherA2DNAA2orA2RNAA2andA2aA2capsid
A2whichA2isA2aA2protectiveA2structureA2thatA2containsA2geneticA2material


TrueA2orA2False.A2YouA2wouldA2expectA2toA2seeA2aA2viralA2envelopeA2onA2aA2virusA2infectin
gA2aA2bacterialA2cell.A2-A2Ans--False

TheA2overwhelmingA2majorityA2ofA2animalA2virusesA2areA2envelopedA2whereasA2theA2majo
rityA2ofA2plantA2orA2bacteria-infectingA2virusesA2areA2not.

TheA2envelopeA2surroundsA2theA2_________A2ofA2someA2viruses.A2-A2Ans--Capsid

TheA2________A2surroundsA2theA2capsidA2ofA2someA2viruses.A2-A2Ans--envelope

RankA2theA2followingA2virusesA2basedA2onA2theirA2sizeA2fromA2largestA2toA2smallest:
Paramyxovirus
Poliovirus
SmallpoxA2virusA2-A2Ans--Smallpox,A2Paramyxovirus,A2Poliovirus

RankA2theA2followingA2virusesA2basedA2onA2theirA2sizeA2fromA2largestA2toA2smallest:
Orthomyxovirus
Poliovirus
VariolavirusA2-A2Ans--Variolavirus
Orthomyxovirus
Poliovirus

TrueA2orA2False:A2HighlyA2infectiousA2virusesA2undergoA2genomeA2replicationA2priorA2toA2v
iralA2attachmentA2andA2entry.A2-A2Ans--False

PlaceA2theA2followingA2viralA2lifeA2cycleA2stepsA2inA2orderA2beginningA2withA2viralA2attachm
entA2and
provideA2aA2descriptionA2ofA2eachA2step.

, Uncoating:
Release:
Replication:
Attachment:
Entry:
NewA2infection:A2-A2Ans--3-A2Uncoating:A2theA2viralA2capsidA2disassembles
5-Release:A2NewA2virusA2particlesA2areA2producedA2andA2leaveA2theA2cell
4-Replication:A2theA2viralA2genomeA2isA2theA2'blueprint'A2toA2makeA2copiesA2ofA2itself
1-Attachment:A2viralA2receptorsA2bindA2toA2hostA2proteinsA2onA2theA2surfaceA2ofA2theA2cell
2-Entry:A2theA2virusA2fusesA2withA2theA2hostA2membraneA2andA2entersA2theA2cell
6-
NewA2infection:A2newlyA2producedA2virusesA2thatA2leftA2theA2hostA2cellA2nowA2goA2onA2toA2i
nfectA2newA2cells.

TrueA2orA2False:A2ViralA2replicationA2occursA2afterA2itA2attachesA2andA2entersA2theA2hostA2c
ell.A2-A2Ans--True

AA2virusA2thatA2infectsA2bacteriaA2isA2calledA2aA2[answer1]A2andA2containsA2aA2[answer2]A2
-sidedA2polygonA2capsid.A2-A2Ans--1.A2Bacteriophage
2.A220

TrueA2orA2False.A2Structurally,A2bacteriophagesA2areA2similarA2toA2virusesA2thatA2infectA2a
nimals.A2-A2Ans--False

IdentifyA2theA2followingA2componentsA2ofA2aA2bacteriophage.

1-A2[answer1]
2-A2[answer2]
3-A2[answer3]
4-A2[answer4]
5-A2[answer5]A2-A2Ans--1.A2capsid
2.A2collar
3.A2tail
4.A2baseA2plate
5.A2tailA2fibers

DescribeA2theA2mainA2differencesA2betweenA2lyticA2andA2temperateA2phages.A2-A2Ans---
A2LyticA2bacteriophagesA2replicateA2withinA2theA2hostA2bacteriaA2untilA2itA2ruptures.
-A2TemporateA2phagesA2primarilyA2existA2inA2aA2non-
replicatingA2stateA2thatA2doesA2notA2killA2theA2hostA2cell.

BasedA2onA2theA2followingA2image,A2wouldA2youA2expectA2theA2viralA2titerA2toA2beA2highA2o
rA2low?A2Why?A2-A2Ans--
Low,A2sinceA2theA2amountA2ofA2intactA2bacterialA2cellsA2inA2theA2mediaA2determinesA2itsA2t
urbidity,