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Questions and Answers
What is the main role of the capsid in a virus?
What is the main role of the capsid in a virus?
Which of the following is a function of viral envelope proteins?
Which of the following is a function of viral envelope proteins?
What distinguishes non-enveloped viruses from enveloped viruses?
What distinguishes non-enveloped viruses from enveloped viruses?
What is the role of capsomers in a virus?
What is the role of capsomers in a virus?
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In viral classification, what is responsible for grouping viruses based on their manner of messenger RNA (mRNA) synthesis?
In viral classification, what is responsible for grouping viruses based on their manner of messenger RNA (mRNA) synthesis?
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Which virus is named after the disease it causes?
Which virus is named after the disease it causes?
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What is a complete virus particle called?
What is a complete virus particle called?
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'A susceptible and permissive cell' is defined as:
'A susceptible and permissive cell' is defined as:
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What distinguishes enveloped viruses from non-enveloped viruses?
What distinguishes enveloped viruses from non-enveloped viruses?
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What distinguishes non-enveloped viruses from enveloped viruses?
What distinguishes non-enveloped viruses from enveloped viruses?
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What is the definition of viral pathogenesis?
What is the definition of viral pathogenesis?
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How is viral virulence quantitated?
How is viral virulence quantitated?
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What is the meaning of 'signs' in the context of disease symptoms?
What is the meaning of 'signs' in the context of disease symptoms?
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Which of the following is NOT an influencing factor on viral virulence?
Which of the following is NOT an influencing factor on viral virulence?
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What is the burden of viral disease in terms of human deaths each year?
What is the burden of viral disease in terms of human deaths each year?
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Which virus caused 10% of child mortality in the developing world due to diarrheal and vomiting in conjunction with malnutrition?
Which virus caused 10% of child mortality in the developing world due to diarrheal and vomiting in conjunction with malnutrition?
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How many individuals were infected with HIV in 2012?
How many individuals were infected with HIV in 2012?
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What was the death toll due to HIV/AIDS in 2012?
What was the death toll due to HIV/AIDS in 2012?
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All viruses have a lipid membrane called an envelope.
All viruses have a lipid membrane called an envelope.
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The viral envelope is made from fatty lipid molecules taken from the host cells.
The viral envelope is made from fatty lipid molecules taken from the host cells.
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Non-enveloped viruses are more resistant to environmental conditions like pH, heat, and dryness.
Non-enveloped viruses are more resistant to environmental conditions like pH, heat, and dryness.
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The main role of the capsid is to protect the viral genomic material.
The main role of the capsid is to protect the viral genomic material.
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Capsomers are clusters of proteins that compose the viral genetic material.
Capsomers are clusters of proteins that compose the viral genetic material.
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The lipid bilayer of the viral envelope is involved in virus attachment to cells.
The lipid bilayer of the viral envelope is involved in virus attachment to cells.
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Virus classification is responsible for grouping viruses based on their manner of messenger RNA (mRNA) synthesis.
Virus classification is responsible for grouping viruses based on their manner of messenger RNA (mRNA) synthesis.
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Naming viruses after scientists who first identified the virus is a common practice in virus nomenclature.
Naming viruses after scientists who first identified the virus is a common practice in virus nomenclature.
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Viruses share a one common ancestor and do not mutate or change.
Viruses share a one common ancestor and do not mutate or change.
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Viruses outnumber bacteria at a ratio of 10:1.
Viruses outnumber bacteria at a ratio of 10:1.
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A resistant cell has no receptor for a given virus and is not competent to support viral replication.
A resistant cell has no receptor for a given virus and is not competent to support viral replication.
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The infectious life cycle of a virus includes stages such as attachment to cells, mRNA translation using host ribosomes, and egress (exit).
The infectious life cycle of a virus includes stages such as attachment to cells, mRNA translation using host ribosomes, and egress (exit).
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Viral virulence is a fixed property and does not change based on the route of infection, species, age, sex, and susceptibility of the host.
Viral virulence is a fixed property and does not change based on the route of infection, species, age, sex, and susceptibility of the host.
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Signs in the context of disease symptoms refer to what only the individual can feel.
Signs in the context of disease symptoms refer to what only the individual can feel.
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Viral virulence can be quantitated based on the mean time to appearance of signs.
Viral virulence can be quantitated based on the mean time to appearance of signs.
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The Burden of Viral Disease results in approximately 2-3 million deaths each year.
The Burden of Viral Disease results in approximately 2-3 million deaths each year.
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Viral Pathogenesis refers to the process by which a virus creates a disease through the effects of viral infection and replication as well as the effects of host response (immune system).
Viral Pathogenesis refers to the process by which a virus creates a disease through the effects of viral infection and replication as well as the effects of host response (immune system).
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Virulence depends on the dose, route of infection, species, age, sex, and susceptibility of the host.
Virulence depends on the dose, route of infection, species, age, sex, and susceptibility of the host.
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Viral virulence is mainly influenced by the measurement of fever and weight loss.
Viral virulence is mainly influenced by the measurement of fever and weight loss.
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The capacity of a virus to cause disease in a host is known as Viral Virulence.
The capacity of a virus to cause disease in a host is known as Viral Virulence.
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Many signs and symptoms of disease are caused by the immune response.
Many signs and symptoms of disease are caused by the immune response.
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Viral virulence is a fixed property that cannot be compared between different viruses without considering various factors.
Viral virulence is a fixed property that cannot be compared between different viruses without considering various factors.
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Study Notes
- Introduction to Virology & Virus structure and Classification is part of the BMS2037 course at the University of Surrey, taught by Dr. Marine Petit.
- Viruses are obligate intracellular parasites with genetic material (DNA or RNA) and a protein coat (capsid), sometimes an envelope (lipid bilayer) taken from the host cells.
- Capsid's role is to protect the viral genomic material, which is usually DNA or RNA.
- The virus envelope is involved in attachment to cells and can help the virus avoid the immune response.
- The capsid comes in three forms: helical, icosahedric, and scaffolded icosahedric.
- Capsid assembly involves the formation of a capsid shell and the packaging of the viral genome inside.
- The capsid has repeating protein structures and is a closed 3-dimensional structure.
- Viruses are classified into a taxonomic system by the International Committee on Taxonomy of Viruses (ICTV), based on phenotypic characteristics.
- Viruses are everywhere and are involved in a wide range of diseases, from gastroenteritis and respiratory infections to zoonotic diseases.
- The viral life cycle consists of attachment to cells, entry and uncoating, mRNA synthesis, translation using host ribosomes, assembly, and egress.
- Viral virulence refers to the capacity of a virus to cause disease in a host and can be quantitated through various methods, such as virus titer and mean time to death.
- The Burden of Viral Disease causes 2-3 million deaths each year, with diseases such as enterovirus, measles, diarrheal and vomiting, influenza, and HIV (AIDS) being some of the most common.
- The course, Introduction to Virology & Virus structure and Classification, covers topics such as clinical virology and diagnostics, the infectious cycle of virus replication mechanisms, and research methods in virology.
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Description
Test your knowledge of virology, virus structure, and classification with this quiz based on the BMS2037 Cellular Microbiology and Virology course. Explore topics such as how viruses infect cells, the global virome, and diseases caused by viruses.
