Quiz
Virology
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Perguntas do quiz (23)
1Which of the following does a virus lack? Select all that apply.
- Aribosomes
- Bmetabolic processes
- Cnucleic acid
- Dglycoprotein
2The envelope of a virus is derived from the host’s
- Anucleic acids
- Bmembrane structures
- Ccytoplasm
- Dgenome
3What is another name for a nonenveloped virus?
- Aenveloped virus
- Bprovirus
- Cnaked virus
- Dlatent virus
4Scientists have identified viruses that are able to infect fungal cells.
- AVerdadeiro
- BFalso
5Which of the following leads to the destruction of the host cells?
- Alysogenic cycle
- Blytic cycle
- Cprophage
- Dtemperate phage
6A virus obtains its envelope during which of the following phases?
- Aattachment
- Bpenetration
- Cassembly
- Drelease
7Which of the following components is brought into a cell by HIV?
- Aa DNA-dependent DNA polymerase
- BRNA polymerase
- Cribosome
- Dreverse transcriptase
8A positive-strand RNA virus:
- Amust first be converted to a mRNA before it can be translated.
- Bcan be used directly to translate viral proteins.
- Cwill be degraded by host enzymes.
- Dis not recognized by host ribosomes.
9What is the name for the transfer of genetic information from one bacterium to another bacterium by a phage?
- Atransduction
- Bpenetration
- Cexcision
- Dtranslation
10or lytic viruses, [blank_start]eclipse[blank_end] is a phase during a viral growth curve when the virus is not detected.
- Aeclipse
11Which of these infectious agents do not have nucleic acid?
- Avirions
- Bviruses
- Cbacteria
- Dprions
12Which of the following is true of prions?
- AThey can be inactivated by boiling at 100 °C
- BThey contain a capsid.
- CThey are a rogue form of protein, PrP.
- DThey can be reliably inactivated by an autoclave.
13Which of the following statements about virus structure is true?
- AAll viruses are encased in a viral membrane.
- BThe capsomere is made up of small protein subunits called capsids.
- CDNA is the genetic material in all viruses.
- DGlycoproteins help the virus attach to the host cell.
14Which statement is true?
- AA virion contains DNA and RNA.
- BViruses are acellular.
- CViruses replicate outside of the cell.
- DMost viruses are easily visualized with a light microscope.
15Which is true of DNA viruses?
- AThey use the host cell’s machinery to produce new copies of their genome.
- BThey all have envelopes.
- CThey are the only kind of viruses that can cause cancer.
- DThey are not important plant pathogens.
16Which of the following is not associated with prions?
- Areplicating shapes
- Bmad cow disease
- CDNA
- Dtoxic proteins
17Which statement is true of viroids?
- AThey are single-stranded RNA particles.
- BThey reproduce only outside of the cell.
- CThey produce proteins.
- DThey affect both plants and animals.
18Which is NOT a Baltimore classification of viruses?
- Apositive-strand DNA
- Bnegative-strand DNA
- Cpositive-strand RNA
- Dnegative-strand RNA
19Group I uses its own or host DNA polymerases for replication.
- AVerdadeiro
- BFalso
20Group I: [blank_start]Double stranded DNA[blank_end]
Group II: [blank_start]Single stranded DNA[blank_end]
Group III: [blank_start]Double stranded RNA[blank_end]
Group IV: [blank_start]Positive single stranded RNA[blank_end]
Group V: [blank_start]Negative single stranded RNA[blank_end]
Group VI: [blank_start]Retrovirus[blank_end]
Group VII: [blank_start]Double stranded DNA pararetrovirus[blank_end]- ADouble stranded DNA
- BSingle stranded DNA
- CDouble stranded RNA
- DPositive single stranded RNA
- ENegative single stranded RNA
- FRetrovirus
- GDouble stranded DNA pararetrovirus
21Spiders carry the Bluetongue virus into barns and fields. The virus causes high morbidity and mortality in ruminants. The Bluetongue virus is an orbivirus, which is part of the Reovirus family.
What is the Baltimore classification for Bluetongue virus?- AGroup I
- BGroup II
- CGroup III
- DGroup IV
- EGroup V
22Spiders carry the Bluetongue virus into barns and fields. The virus causes high morbidity and mortality in ruminants. The Bluetongue virus is an orbivirus, which is part of the Reovirus family.
What type of genome does the Bluetongue virus have?- ASingle-stranded DNA
- BDouble-stranded DNA
- CSingle-stranded RNA
- DDouble-stranded RNA
23What’s the difference between a virion and a viroid?
- AThere’s no difference. The terms are synonymous
- BA viroid is bigger than a virion
- CA viroid only infects plants while a virion only infects animals
- DA viroid only has a capsid and no genetic material
- EA viroid only has RNA and no capsid
Informações
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- W11T
- Autor
- Amanda A
- Idioma
- English
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