Podcast
Questions and Answers
What is the primary characteristic that defines a virus as an obligate intracellular parasite?
What is the primary characteristic that defines a virus as an obligate intracellular parasite?
- They can only infect eukaryotic cells.
- They require host cell metabolic processes and protein synthesis machinery. (correct)
- They have a cell wall similar to bacteria.
- They can replicate outside of a host cell.
What is the typical size range of the RNA or DNA genome in a virus?
What is the typical size range of the RNA or DNA genome in a virus?
- 300-500 nm
- 20-300 nm (correct)
- 2-10 nm
- 10-20 nm
What is unique about the structure of viruses?
What is unique about the structure of viruses?
- They all have a icosahedral structure.
- They all have a helical structure.
- They have a diverse range of structures, including icosahedral, helical, and others. (correct)
- They all have a cell wall similar to bacteria.
Where can a virus replicate in a host cell?
Where can a virus replicate in a host cell?
What is the size range of human viral pathogens?
What is the size range of human viral pathogens?
What was the first identified virus?
What was the first identified virus?
What is the range of pathogenesis of viruses?
What is the range of pathogenesis of viruses?
What is the primary function of the capsid in a virus?
What is the primary function of the capsid in a virus?
What is the term for a single virus particle?
What is the term for a single virus particle?
What type of viral genome is the same as messenger RNA (mRNA)?
What type of viral genome is the same as messenger RNA (mRNA)?
What is the term for the process of converting RNA into DNA during a virus's life cycle?
What is the term for the process of converting RNA into DNA during a virus's life cycle?
What is the main advantage of a viral envelope?
What is the main advantage of a viral envelope?
What is the purpose of the matrix in a virus?
What is the purpose of the matrix in a virus?
Why do most viruses have a specific host, tissue, or cell type?
Why do most viruses have a specific host, tissue, or cell type?
What is the term for the classification of viruses based on their nucleic acid type and replication?
What is the term for the classification of viruses based on their nucleic acid type and replication?
What is the term for the shape of a virus with 20 triangular faces and 12 vertices?
What is the term for the shape of a virus with 20 triangular faces and 12 vertices?
What is a characteristic of DNA viruses that distinguishes them from RNA viruses?
What is a characteristic of DNA viruses that distinguishes them from RNA viruses?
Which of the following viruses is limited to infecting mitotically active cells?
Which of the following viruses is limited to infecting mitotically active cells?
What is the primary site of assembly for enveloped DNA viruses?
What is the primary site of assembly for enveloped DNA viruses?
What is the term for diseases that are naturally transmitted between humans and other vertebrates?
What is the term for diseases that are naturally transmitted between humans and other vertebrates?
Which of the following transmission routes is dependent on the stability of the virus in environmental conditions?
Which of the following transmission routes is dependent on the stability of the virus in environmental conditions?
What is the term for the period between exposure and the onset of symptoms in a viral disease?
What is the term for the period between exposure and the onset of symptoms in a viral disease?
Which of the following is an example of a transmission factor that enhances the transmission of a virus?
Which of the following is an example of a transmission factor that enhances the transmission of a virus?
What is the term for the process by which viruses assemble capsids and inject their genome into a host cell?
What is the term for the process by which viruses assemble capsids and inject their genome into a host cell?
Which of the following is an example of a virus that usurps the ESCRT vesicular budding pathway?
Which of the following is an example of a virus that usurps the ESCRT vesicular budding pathway?
What is the term for the cells that are targeted by a virus and result in clinical disease?
What is the term for the cells that are targeted by a virus and result in clinical disease?
What is the primary factor that determines the absolute measurement of a virus's host range?
What is the primary factor that determines the absolute measurement of a virus's host range?
Which of the following is an example of a non-epithelial site where viral infections can initiate?
Which of the following is an example of a non-epithelial site where viral infections can initiate?
What is the result of receptor binding during virus fusion and entry?
What is the result of receptor binding during virus fusion and entry?
What is the mechanism of endocytosis involved in virus fusion and entry?
What is the mechanism of endocytosis involved in virus fusion and entry?
What is the role of dsRNA in RNA virus replication?
What is the role of dsRNA in RNA virus replication?
What is the purpose of membranous replication complexes in RNA virus replication?
What is the purpose of membranous replication complexes in RNA virus replication?
What is the limitation of RNA virus genome size?
What is the limitation of RNA virus genome size?
What is the mechanism used by RNA viruses to increase genetic capacity?
What is the mechanism used by RNA viruses to increase genetic capacity?
Where does DNA virus replication typically occur?
Where does DNA virus replication typically occur?
What is the role of origin-binding proteins in DNA virus replication?
What is the role of origin-binding proteins in DNA virus replication?
What is the result of the host immune response being stronger than the virus?
What is the result of the host immune response being stronger than the virus?
What is the typical outcome of most viral infections?
What is the typical outcome of most viral infections?
Which type of viral infection involves an initial acute phase, followed by apparent recovery, and then a secondary disease phase?
Which type of viral infection involves an initial acute phase, followed by apparent recovery, and then a secondary disease phase?
What is the term for the ability of a virus to establish a long-term infection that can last for many years or a lifetime?
What is the term for the ability of a virus to establish a long-term infection that can last for many years or a lifetime?
Which type of viral infection involves the virus entering a dormant phase, with no symptoms, and can reactivate to cause recurrent infections?
Which type of viral infection involves the virus entering a dormant phase, with no symptoms, and can reactivate to cause recurrent infections?
What is the term for the process by which a virus promotes cell growth and survival, leading to an increased tolerance for DNA mutations and ultimately cellular transformation?
What is the term for the process by which a virus promotes cell growth and survival, leading to an increased tolerance for DNA mutations and ultimately cellular transformation?
Which type of diagnostic test involves the detection of viral nucleic acids in blood, mucus, excretion, or tissue samples?
Which type of diagnostic test involves the detection of viral nucleic acids in blood, mucus, excretion, or tissue samples?
What is the primary target for the treatment of viral diseases?
What is the primary target for the treatment of viral diseases?
What is the term for the type of vaccine that safely induces an immune response capable of preventing or attenuating illness?
What is the term for the type of vaccine that safely induces an immune response capable of preventing or attenuating illness?
What is the purpose of a therapeutic vaccine?
What is the purpose of a therapeutic vaccine?
