Test
Intro to virology
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (31)
1The outer surface of the capsid mediates with host cells.
- ANaked Virus
- BEnveloped Virus
2The glycoproteins anchored in the envelope and pointing out mediate contact with the host cells.
- ANaked Virus
- BEnveloped Virus
3Which type of virus is especially Sensitive to lipid solvents (ex. Chloroform, ether) and also to non-ionic detergents.
- ANaked Viruses
- BEnveloped Viruses
4[blank_start]Naked[blank_end] viruses tend to be more stable to environmental changes than [blank_start]enveloped[blank_end] viruses.
- ANaked
- BEnveloped
- CNaked
- DEnveloped
5[blank_start]Enveloped[blank_end] viruses are usually transmitted via aqueous environment: e.g. various body secretions, blood
- ANaked
- BEnveloped
6[blank_start]Naked[blank_end] viruses may be transmitted by many routes: e.g. secretions/blood, oral-fecal, skin contact
- ANaked
- BEnveloped
7What viral structure is defined as a lipid bilayer derived from host cell membranes during the process of virus maturation.
- AVirion
- BCapsid
- CEnvelope
- DNucleocapsid
8Which viral structure is defined as a protein shell that surrounds and protects the viral genome?
- AVirion
- BCapsomer
- CNucleocapsid
- DEnvelope
- ECell wall
- FCapsid
9[blank_start]Icosahedral[blank_end] structures approximate spheres.
- AIcosahedral
- BHelical
10Icosahedral structures can have which of the following axis/axes of symmetry? (Select all that apply)
- Anone. Icosahedral is not symmetrical.
- Btwo-fold
- Cthree-fold
- Dfour-fold
- Efive-fold
11Helical structures can have which of the following axis/axes of symmetry? (Select all that apply)
- ANone. Helical structures are not symmetrical.
- Btwo-fold
- Cthree-fold
- Dfour-fold
- Efive-fold
12The Corona family of viruses is classified as
- [blank_start]Enveloped[blank_end]
-[blank_start]RNA[blank_end] virus
-with [blank_start]helical[blank_end] symmetry of the capsid. -It has a [blank_start]positive[blank_end], [blank_start]single-stranded[blank_end], [blank_start]non-segmented[blank_end] genome.
-It is virion polymerase [blank_start]negative[blank_end].
-It's genome size is [blank_start]16-21[blank_end] kb.- AEnveloped
- BNaked
- CRNA
- DDNA
- Ehelical
- Ficosahedral
- Gpositive
- Hnegative
- Isingle-stranded
- Jdouble stranded
- Knon-segmented
- L10-18 segment
- M3 Segment
- N8 Segment
- O2 Segment
- P2 copies
- Qnegative
- Rpositive
- S16-21
- T22-27
- U8
- V7.2-8.4
- W10
- X12
- Y3.5-9
- Z12.7
- AA13-16
- AB13.5-21
- AC13.6
- AD16-20
- AE10-14
13The Reo family of viruses is classified as
-[blank_start]Naked[blank_end]
-[blank_start]RNA[blank_end] virus
-with [blank_start]Icosahedral[blank_end] symmetry of the capsid.
-It has a [blank_start]double-stranded[blank_end], [blank_start]10-18 segment[blank_end] genome.
-It is virion polymerase [blank_start]positive.[blank_end]
-It's genome size is [blank_start]22-27[blank_end] total in kb.- ANaked
- BEnveloped
- CRNA
- DDNA
- EIcosahedral
- FHelical
- Gdouble-stranded
- Hsingle-stranded
- I10-18 segment
- Jnon-segmented
- K2 copies
- L3 segment
- M8 segment
- N2 segment
- Opositive.
- Pnegative.
- Q22-27
- R8
- S7.2-8.4
- T10
- U12
- V3.5-9
- W16-21
- X12.7
- Y13-16
- Z16-20
- AA10-14
14The Calici family of viruses is classified as a:
-[blank_start]Naked[blank_end]
-[blank_start]RNA[blank_end] virus
-with [blank_start]Icosahedral[blank_end] symmetry of the capsid.
-It has a [blank_start]positive, single-stranded, non-segmented[blank_end] genome.
-It is virion polymerase [blank_start]negative[blank_end].
-It's genome size is [blank_start]8[blank_end] total in kb.- ANaked
- BEnveloped
- CRNA
- DDNA
- EIcosahedral
- FHelical
- G(+) single-stranded, non-segmented
- Hdouble-stranded, 10-18 segment
- I(+) single-stranded, 2 copies
- J(-) single-stranded, non-segmented
- K(-) single stranded, 3 segment
- L(-) single stranded, 8 segment
- M(-) single-stranded, 2 segment
- Nnegative
- Opositive
- P8
- Q22-27
- R7.2-8.4
- S10
- T12
- U3.5-9
- V16-21
- W12.7
- X13-16
- Y13.5-21
- Z13.6
- AA16-20
- AB10-14
15The Picorna family of viruses is classified as a:
-[blank_start]Naked RNA[blank_end] virus with [blank_start]Icosahedral[blank_end] symmetry of the capsid.
-It has a [blank_start]positive, single-stranded, non-segmented[blank_end] genome.
-It is virion polymerase [blank_start]negative[blank_end].
-It's genome size is [blank_start]7.2-8.4[blank_end] total in kb.- ANaked RNA
- BNaked DNA
- CEnveloped RNA
- DEnveloped DNA
- EIcosahedral
- FHelical
- G(+) single-stranded, non-segmented
- Hdouble-stranded, 10-18 segment
- I(+) single-stranded, 2 copies
- J(-) single-stranded, non-segmented
- K(-) single-stranded, 3 segment
- L(-) single stranded, 8 segment
- M(-) single stranded, 2 segment
- Nnegative
- Opositive
- P7.2-8.4
- Q22-27
- R3.5-9
- S13.5-21
- T8
16The Flavi family of viruses is classified as a(n):
-[blank_start]Enveloped RNA[blank_end] virus with [blank_start]Icosahedral[blank_end] symmetry of the capsid.
-It has a [blank_start](+) ss continuous[blank_end] genome.
-It is virion polymerase [blank_start]negative[blank_end].
-It's genome size is [blank_start]10[blank_end] total in kb.- AEnveloped RNA
- BEnveloped DNA
- CNaked DNA
- DNaked RNA
- EIcosahedral
- FHelical
- G(+) ss continuous
- H(-) ss continuous
- I(-) ss, 3 segment
- J(-) ss, 8 segment
- K(-) ss, 2 segment
- LDS, 10-18 segment
- M(+) ss, 2 copies
- Nnegative
- Opositive
- P10
- Q12
- R8
- S13-16
- T13.5-21
- U13.6
17The Toga family of viruses is classified as a(n):
-Enveloped RNA virus with Icosahedral symmetry of the capsid.
-It has a (-) ss continuous genome.
-It is virion polymerase negative.- AVerdadero
- BFalso
18Which family of viruses has the following characteristics?
-Enveloped RNA virus with Icosahedral symmetry of the capsid.
-It has a (+) ss 2 copies genome architecture.
-It is virion polymerase positve.- ARetroviruses
- BFlaviviruses
- CTogaviruses
- DCorona viruses
- ERhabdoviruses
19Which of the following family of viruses have a (-) single stranded, non-segmented genome architecture? (Select all that apply)
- AReoviruses
- BFlaviviruses
- CTogaviruses
- DRetroviruses
- ECoronaviruses
- FFiloviruses
- GRhabdoviruses
- HParamyxoviruses
- IArenaviruses
- JBunyaviruses
20Which of the following can the smallest possible genome size?
- ACorona viruses
- BRhabdoviruses
- CArenaviruses
- DFlaviviruses
- EPicornaviruses
- FRetroviruses
21Adenoviruses is a kind of RNA virus
- AVerdadero
- BFalso
22Herpes virus, Pox viruses, Togaviruses, and Rhabdoviruses are all enveloped viruses
- AVerdadero
- BFalso
23Which of the following Naked DNA viruses have a linear genome architecture? (Select all that apply)
- AParvoviruses
- BPapovaviruses
- CAdenoviruses
- DPicornaviruses
- EArenaviruses
24Filoviruses do not have virion polymerases.
- AVerdadero
- BFalso
25The pox virus is a Helical enveloped DNA virus.
- AVerdadero
- BFalso
26Which of the following does not go with the others?
- ACaliciviruses
- BPicornaviruses
- CFlaviviruses
- DTogaviruses
- ERetroviruses
- FCoronaviruses
27The virus life cycle:
1. [blank_start]Attachment[blank_end] - virus [blank_start]binding[blank_end] to cellular receptor(s)
2. [blank_start]Entry[blank_end] - [blank_start]receptor-mediated[blank_end] endocytosis or fusion of viral envelope with cell membrane
3. [blank_start]Uncoating[blank_end] - [blank_start]depends on entry process[blank_end]
4. [blank_start]Replication[blank_end] - [blank_start]depends on type of virus[blank_end]
• [blank_start]mRNA[blank_end] transcription
• [blank_start]protein[blank_end] translation
• [blank_start]nucleic acid[blank_end] replication
5. [blank_start]Assembly[blank_end] - depends on type of virus
6. [blank_start]Release[blank_end] - [blank_start]naked viruses[blank_end] generally release by cell [blank_start]lysis[blank_end]; enveloped viruses release by membrane budding- AAttachment
- Breceptor-mediated
- CmRNA
- Dprotein
- Enucleic acid
- Fnaked viruses
- Gdepends on type of virus
- Hdepends on entry process
- IEntry
- JUncoating
- KRelease
- LAssembly
- MReplication
- Nbinding
- Olysis
28Types of Virus Infection
[blank_start]Acute[blank_end] – infection of a permissive cell: results in virus production, may result in cell death (lytic infection)
[blank_start]Abortive[blank_end] – infection of a non- or semi-permissive cell: block to virus production at some step so infection
aborts
[blank_start]Persistent[blank_end] – long-lasting virus infection. Can be chronic, latent or slow.- AAcute
- BAbortive
- CPersistent
29Persistent infections:
• [blank_start]Chronic[blank_end]-low levels of virus produced over a long time, chronic virus production and reinfection of cells
• [blank_start]Latent[blank_end]- virus goes dormant following primary infection, may reactivate infection at subsequent times
• [blank_start]Slow[blank_end]: virus production increases slowly over time- AChronic
- BLatent
- CSlow
30Productive infection- Sequence of events
1. [blank_start]Virus enters susceptible cells[blank_end]
2. [blank_start]Replication: Transcription / translation[blank_end] of viral genes
3. Viral [blank_start]genome replication occurs[blank_end]
4. [blank_start]Assembly, maturation, and release[blank_end] of virus particles
5. Generally (but not always) [blank_start]results in death[blank_end] of the host cell- AVirus enters susceptible cells
- BReplication: Transcription / translation
- Cgenome replication occurs
- DAssembly, maturation, and release
- Eresults in death
31Latent Infection: Sequence of events
1.Virus [blank_start]enters susceptible cells[blank_end]
2. [blank_start]Transcription / translation of latency[blank_end] associated viral genes Viral genes for lytic replication not expressed
3.[blank_start]Maintenance of the viral genome[blank_end]
4. [blank_start]No progeny virions produced[blank_end]
5. [blank_start]Reactivation of viral gene expression[blank_end] results in lytic gene expression and production of infectious virus- Aenters susceptible cells
- BTranscription / translation of latency
- CMaintenance of the viral genome
- DNo progeny virions produced
- EReactivation of viral gene expression
Información
- Descripción
- Going viral
- Autor
- bpasistor
- Idioma
- English
- Visitas
- 59
- Etiquetas
- Valoración
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