Virus Taxonomy and Baltimore Classification Quiz

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What is the primary factor used in the Baltimore classification system to categorize viruses?

Dimensions of the virion and capsid

Nature of the nucleic acid (correct)

Symmetry of the capsid

Presence or absence of an envelope

Which component of a virus is responsible for anchoring glycoproteins and plays a role in host cell recognition?

Nucleic acid

Capsid

Nucleocapsid

Envelope (correct)

What is the structural unit of a capsid that comprises one or multiple protein subunits?

Envelope

Nucleocapsid

Virion

Protomers (correct)

In viral taxonomy, which characteristic helps differentiate viruses based on the genetic material they contain?

Nature of the nucleic acid Signup and view all the answers

Which type of virus has an outer layer composed of a phospholipid bilayer derived from the host cell?

Human immunodeficiency virus Signup and view all the answers

What is the function of the nucleocapsid in a virus structure?

Protect the nucleic acid Signup and view all the answers

Which characteristic aids in distinguishing enveloped viruses from non-enveloped viruses?

Presence or absence of an envelope Signup and view all the answers

Which of the following viruses has a positive-sense, single-stranded RNA genome?

Coronavirus Signup and view all the answers

What is the capsid structure of the Adenovirus?

Icosahedral Signup and view all the answers

Which of the following viruses has a negative-sense, single-stranded RNA genome?

Rhabdovirus Signup and view all the answers

Which of the following viruses is classified as a double-stranded DNA virus?

Poxvirus Signup and view all the answers

Which of the following viruses has an enveloped structure?

Coronavirus Signup and view all the answers

Which of the following viruses is classified as a reverse transcribing virus?

Retrovirus Signup and view all the answers

Which of the following viruses is classified as a single-stranded DNA virus?

Parvovirus Signup and view all the answers

Which of the following viral families has an icosahedral capsid structure?

Herpesviridae Signup and view all the answers

What type of nucleic acid is found in HIV (human immunodeficiency virus)?

Single-stranded RNA Signup and view all the answers

What is the taxonomic classification of the virus that causes monkeypox (mpox)?

Family Poxviridae, genus Orthopoxvirus Signup and view all the answers

Which of the following viral families has a helical capsid structure?

Rhabdoviridae Signup and view all the answers

According to the Baltimore classification, which group includes viruses with single-stranded, negative-sense RNA genomes and helical capsids?

Group V Signup and view all the answers

Which of the following is a characteristic of an icosahedral capsid?

It is composed of 20 equilateral triangular faces. Signup and view all the answers

What is the primary source of the viral envelope in enveloped viruses?

The host cell's plasma membrane Signup and view all the answers

Which of the following is a characteristic of the Rhabdoviridae family?

They have a single-stranded, negative-sense RNA genome and a helical capsid. Signup and view all the answers

Which of the following viral genomes is composed of double-stranded DNA?

Poxvirus Signup and view all the answers

According to the taxonomic classification system, which level corresponds to the suffix '-virus'?

Genus Signup and view all the answers

Which of the following statements about viral capsids is true?

Icosahedral capsids are formed by the aggregation of capsomeres. Signup and view all the answers

What is the primary function of the viral envelope?

To facilitate the entry of the virus into host cells. Signup and view all the answers

Which of the following statements about viral genomes is true?

Positive-sense RNA genomes can be directly translated by host ribosomes. Signup and view all the answers

Which of the following viral families is characterized by having a helical capsid and a single-stranded, negative-sense RNA genome?

All of the above Signup and view all the answers

Which of the following is NOT a route of viral transmission mentioned in the text?

Saliva Signup and view all the answers

What does 'vertical transmission' refer to in the context of viral transmission?

Transmission from mother to offspring during or around birth Signup and view all the answers

Which of the following is NOT an example of vertical transmission mentioned in the text?

Transmission through skin lesions Signup and view all the answers

What is a 'reservoir host' in the context of cross-species transmission?

A host population in which a viral population is maintained Signup and view all the answers

Which of the following statements about spillover hosts is NOT true according to the text?

The host population can maintain the viral population Signup and view all the answers

What is the first stage in the five evolutionary stages of cross-species transmission described by Wolfe et al. (2007)?

The virus is present in a reservoir host population Signup and view all the answers

Which of the following statements about reservoir hosts is true according to the text?

Viruses can still be highly virulent to and even kill reservoir hosts Signup and view all the answers

Which of the following is NOT a potential route of entry for viruses mentioned in the text?

None Signup and view all the answers

Which of the following statements about the viral infection cycle is true?

Viral assembly and release from the host cell is the final step in the infection cycle Signup and view all the answers

Which of the following is NOT a potential consequence of cross-species transmission mentioned in the text?

Complete eradication of the virus from all host populations Signup and view all the answers

Which of the following is NOT a common route of viral transmission?

Photosynthesis Signup and view all the answers

Which of the following is an example of vertical transmission of a virus?

Transmission of Zika virus from mother to fetus Signup and view all the answers

Which characteristic is used to differentiate viruses based on the symmetry of the capsid?

Dimensions of the virion and capsid Signup and view all the answers

In viral taxonomy, what is the primary factor used to differentiate viruses based on their genetic material?

Nature of the nucleic acid Signup and view all the answers

Which of the following is a route of viral entry into the host?

All of the above Signup and view all the answers

Which of the following best describes the viral infection cycle?

Entry into host, replication, assembly, release Signup and view all the answers

Which viral characteristic plays a significant role in cross-species transmission?

Nature of the nucleic acid Signup and view all the answers

Which of the following is NOT a potential route of viral shedding from the host?

Photosynthesis Signup and view all the answers

What is the primary route of transmission for Human Immunodeficiency Virus (HIV)?

Sexual transmission Signup and view all the answers

Which of the following is an example of cross-species transmission of a virus?

Transmission of Zika virus from mosquitoes to humans Signup and view all the answers

Which of the following viruses is most likely to spread through direct contact between hosts?

Ebola virus Signup and view all the answers

Which of the following is a potential route of hematogenous spread of a virus within the host?

Through the bloodstream Signup and view all the answers

What role do glycoproteins play in the spread of viruses within a host?

Anchoring the viral envelope Signup and view all the answers

Which of the following is an example of neural spread of a virus within the host?

Spread of rabies virus through the nervous system Signup and view all the answers

Which of the following is a potential route of sexual transmission of a virus?

Exchange of bodily fluids during sexual activity Signup and view all the answers

Which of the following is a potential route of vector-borne transmission of a virus?

Transmission by an insect vector, such as a mosquito Signup and view all the answers

Which type of symmetry is associated with helical nucleocapsids in animal viruses?

Icosahedral Signup and view all the answers

In viral taxonomy, what differentiates viruses based on the genetic material they contain?

Nucleic acid Signup and view all the answers

Which type of RNA genome does the rabies virus possess?

Negative sense (-) Signup and view all the answers

What is the symmetry associated with capsid structure composed of hexons and pentons?

Icosahedral Signup and view all the answers

Which parameter helps classify viruses by whether they are enveloped or non-enveloped?

Genome architecture Signup and view all the answers

Virus Taxonomy and Baltimore Classification Quiz

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Questions and Answers

What is the primary factor used in the Baltimore classification system to categorize viruses?

Which component of a virus is responsible for anchoring glycoproteins and plays a role in host cell recognition?

What is the structural unit of a capsid that comprises one or multiple protein subunits?

In viral taxonomy, which characteristic helps differentiate viruses based on the genetic material they contain?

Which type of virus has an outer layer composed of a phospholipid bilayer derived from the host cell?

What is the function of the nucleocapsid in a virus structure?

Which characteristic aids in distinguishing enveloped viruses from non-enveloped viruses?

Which of the following viruses has a positive-sense, single-stranded RNA genome?

What is the capsid structure of the Adenovirus?

Which of the following viruses has a negative-sense, single-stranded RNA genome?

Which of the following viruses is classified as a double-stranded DNA virus?

Which of the following viruses has an enveloped structure?

Which of the following viruses is classified as a reverse transcribing virus?

Which of the following viruses is classified as a single-stranded DNA virus?

Which of the following viral families has an icosahedral capsid structure?

What type of nucleic acid is found in HIV (human immunodeficiency virus)?

What is the taxonomic classification of the virus that causes monkeypox (mpox)?

Which of the following viral families has a helical capsid structure?

According to the Baltimore classification, which group includes viruses with single-stranded, negative-sense RNA genomes and helical capsids?

Which of the following is a characteristic of an icosahedral capsid?

What is the primary source of the viral envelope in enveloped viruses?

Which of the following is a characteristic of the Rhabdoviridae family?

Which of the following viral genomes is composed of double-stranded DNA?

According to the taxonomic classification system, which level corresponds to the suffix '-virus'?

Which of the following statements about viral capsids is true?

What is the primary function of the viral envelope?

Which of the following statements about viral genomes is true?

Which of the following viral families is characterized by having a helical capsid and a single-stranded, negative-sense RNA genome?

Which of the following is NOT a route of viral transmission mentioned in the text?

What does 'vertical transmission' refer to in the context of viral transmission?

Which of the following is NOT an example of vertical transmission mentioned in the text?

What is a 'reservoir host' in the context of cross-species transmission?

Which of the following statements about spillover hosts is NOT true according to the text?

What is the first stage in the five evolutionary stages of cross-species transmission described by Wolfe et al. (2007)?

Which of the following statements about reservoir hosts is true according to the text?

Which of the following is NOT a potential route of entry for viruses mentioned in the text?

Which of the following statements about the viral infection cycle is true?

Which of the following is NOT a potential consequence of cross-species transmission mentioned in the text?

Which of the following is NOT a common route of viral transmission?

Which of the following is an example of vertical transmission of a virus?

Which characteristic is used to differentiate viruses based on the symmetry of the capsid?

In viral taxonomy, what is the primary factor used to differentiate viruses based on their genetic material?

Which of the following is a route of viral entry into the host?

Which of the following best describes the viral infection cycle?

Which viral characteristic plays a significant role in cross-species transmission?

Which of the following is NOT a potential route of viral shedding from the host?

What is the primary route of transmission for Human Immunodeficiency Virus (HIV)?

Which of the following is an example of cross-species transmission of a virus?

Which of the following viruses is most likely to spread through direct contact between hosts?

Which of the following is a potential route of hematogenous spread of a virus within the host?

What role do glycoproteins play in the spread of viruses within a host?

Which of the following is an example of neural spread of a virus within the host?

Which of the following is a potential route of sexual transmission of a virus?

Which of the following is a potential route of vector-borne transmission of a virus?

Which type of symmetry is associated with helical nucleocapsids in animal viruses?

In viral taxonomy, what differentiates viruses based on the genetic material they contain?

Which type of RNA genome does the rabies virus possess?

What is the symmetry associated with capsid structure composed of hexons and pentons?

Which parameter helps classify viruses by whether they are enveloped or non-enveloped?

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