Podcast
Questions and Answers
Which of the following best describes a virus?
Which of the following best describes a virus?
- A living organism composed of nucleic acid and protein
- A small organism that can multiply outside of host cells
- A type of bacteria that infects humans
- A non-living parasite that infects host cells (correct)
What is the main reason why viruses are not included in the tree of life?
What is the main reason why viruses are not included in the tree of life?
- They do not have a cellular structure (correct)
- They are too small to be classified
- They are not composed of DNA or RNA
- They cannot multiply outside of host cells
What is the role of the host cell in viral replication?
What is the role of the host cell in viral replication?
- The host cell releases the virus particles
- The host cell protects the virus from the immune system
- The host cell assembles the virus particles (correct)
- The host cell provides energy for the virus to replicate
What is meant by the term 'host range' in relation to viruses?
What is meant by the term 'host range' in relation to viruses?
How can viruses be transmitted from one host to another?
How can viruses be transmitted from one host to another?
Which step in the life cycle of animal viruses involves the attachment of the virus to the plasma membrane of the host cell?
Which step in the life cycle of animal viruses involves the attachment of the virus to the plasma membrane of the host cell?
Which type of animal virus enters the host cell by fusing its envelope with the plasma membrane?
Which type of animal virus enters the host cell by fusing its envelope with the plasma membrane?
Which type of animal virus is taken into the host cell by endocytosis?
Which type of animal virus is taken into the host cell by endocytosis?
Which type of animal virus requires reverse transcriptase to generate a provirus?
Which type of animal virus requires reverse transcriptase to generate a provirus?
Which step in the viral growth curve is characterized by the release of many viral particles into the medium?
Which step in the viral growth curve is characterized by the release of many viral particles into the medium?
Which step of the one-step multiplication curve for a bacteriophage population involves the entry of the viral genome into the host cell?
Which step of the one-step multiplication curve for a bacteriophage population involves the entry of the viral genome into the host cell?
What is the burst size in the context of a bacteriophage population?
What is the burst size in the context of a bacteriophage population?
How can virions in a liquid medium be separated from host cells?
How can virions in a liquid medium be separated from host cells?
In the context of virus cultivation, what is a bacterial lawn?
In the context of virus cultivation, what is a bacterial lawn?
What is the primary cell culture?
What is the primary cell culture?
Which category of viruses has an envelope in addition to capsid?
Which category of viruses has an envelope in addition to capsid?
What are the two types of spikes found in the Influenza virus?
What are the two types of spikes found in the Influenza virus?
What is the function of Neuraminidase spike in the Influenza virus?
What is the function of Neuraminidase spike in the Influenza virus?
How are viruses classified into families and genera?
How are viruses classified into families and genera?
What happens in the lytic cycle of a bacteriophage?
What happens in the lytic cycle of a bacteriophage?
Which type of agents can inactivate viruses?
Which type of agents can inactivate viruses?
Which of the following is true about antiviral drugs?
Which of the following is true about antiviral drugs?
Which enzyme do neuraminidase inhibitors target?
Which enzyme do neuraminidase inhibitors target?
Which antiviral drug is used to treat respiratory syncytial virus (RSV)?
Which antiviral drug is used to treat respiratory syncytial virus (RSV)?
Which type of drugs react with HIV protease to reduce protein size and make capsid?
Which type of drugs react with HIV protease to reduce protein size and make capsid?
Which type of cell culture is affected by contact inhibition?
Which type of cell culture is affected by contact inhibition?
What is the main difference between viroids and virusoids?
What is the main difference between viroids and virusoids?
What is the cause of transmissible spongiform encephalopathies (TSEs)?
What is the cause of transmissible spongiform encephalopathies (TSEs)?
What is the role of normal prion protein (PrPc) in prion diseases?
What is the role of normal prion protein (PrPc) in prion diseases?
Which of the following is NOT a prion disease in humans?
Which of the following is NOT a prion disease in humans?
Which enzyme do neuraminidase inhibitors target?
Which enzyme do neuraminidase inhibitors target?
Which type of drugs react with HIV protease to reduce protein size and make capsid?
Which type of drugs react with HIV protease to reduce protein size and make capsid?
Which type of agents can inactivate viruses?
Which type of agents can inactivate viruses?
Which step in the life cycle of animal viruses involves the attachment of the virus to the plasma membrane of the host cell?
Which step in the life cycle of animal viruses involves the attachment of the virus to the plasma membrane of the host cell?
What is the main reason why viruses are not included in the tree of life?
What is the main reason why viruses are not included in the tree of life?
Which step in the life cycle of animal viruses involves the attachment of the virus to the plasma membrane of the host cell?
Which step in the life cycle of animal viruses involves the attachment of the virus to the plasma membrane of the host cell?
Which type of animal virus requires reverse transcriptase to generate a provirus?
Which type of animal virus requires reverse transcriptase to generate a provirus?
What is the role of reverse transcriptase in the replication of RNA viruses?
What is the role of reverse transcriptase in the replication of RNA viruses?
Which step of the viral growth curve is characterized by the release of many viral particles into the medium?
Which step of the viral growth curve is characterized by the release of many viral particles into the medium?
What is the primary site of integration for the varicella-zoster virus during a latent infection?
What is the primary site of integration for the varicella-zoster virus during a latent infection?
Which of the following best describes a virus?
Which of the following best describes a virus?
What is the primary function of a virus' capsid structure?
What is the primary function of a virus' capsid structure?
What is the host range of a virus?
What is the host range of a virus?
How can viruses be transmitted from one host to another?
How can viruses be transmitted from one host to another?
What is the role of the host cell in viral replication?
What is the role of the host cell in viral replication?
Which type of cell culture is not affected by contact inhibition?
Which type of cell culture is not affected by contact inhibition?
Which of the following is a characteristic of viroids?
Which of the following is a characteristic of viroids?
Which of the following is NOT a virus-like agent?
Which of the following is NOT a virus-like agent?
Which of the following is a characteristic of prions?
Which of the following is a characteristic of prions?
Which of the following is a transmissible spongiform encephalopathy caused by prions?
Which of the following is a transmissible spongiform encephalopathy caused by prions?
What is the burst size in the context of a bacteriophage population?
What is the burst size in the context of a bacteriophage population?
What is the main difference between in vivo and in vitro cultivation of viruses?
What is the main difference between in vivo and in vitro cultivation of viruses?
Which of the following is NOT a source for in vivo cultivation of animal viruses?
Which of the following is NOT a source for in vivo cultivation of animal viruses?
What is the main advantage of using continuous cell lines for virus culture?
What is the main advantage of using continuous cell lines for virus culture?
How can virions be separated from host cells in virus cultivation?
How can virions be separated from host cells in virus cultivation?
Which of the following is NOT a category of viruses based on general composition?
Which of the following is NOT a category of viruses based on general composition?
What is the function of Hemagglutin (H) spike in the Influenza virus?
What is the function of Hemagglutin (H) spike in the Influenza virus?
Which of the following is true about temperate phages?
Which of the following is true about temperate phages?
Which step in the life cycle of T-even bacteriophage involves the degradation of the bacterial chromosome and synthesis of multiple copies of viral DNA?
Which step in the life cycle of T-even bacteriophage involves the degradation of the bacterial chromosome and synthesis of multiple copies of viral DNA?
What happens in the lytic cycle of a virulent bacteriophage?
What happens in the lytic cycle of a virulent bacteriophage?
Which step in the one-step multiplication curve of a bacteriophage population involves the entry of the viral genome into the host cell?
Which step in the one-step multiplication curve of a bacteriophage population involves the entry of the viral genome into the host cell?
What is the maximum number of virions produced per bacterium known as?
What is the maximum number of virions produced per bacterium known as?
How can virions in a liquid medium be separated from host cells?
How can virions in a liquid medium be separated from host cells?
Which type of cell culture has a limited life span and is prone to contact inhibition?
Which type of cell culture has a limited life span and is prone to contact inhibition?
What is the main reason why viruses require a living host cell for replication?
What is the main reason why viruses require a living host cell for replication?
Which of the following is NOT a viral structure?
Which of the following is NOT a viral structure?
Which type of viruses have an envelope in addition to a capsid?
Which type of viruses have an envelope in addition to a capsid?
What is the role of the Hemagglutin (H) spike in the Influenza virus?
What is the role of the Hemagglutin (H) spike in the Influenza virus?
What is the main advantage of using continuous cell lines for virus culture?
What is the main advantage of using continuous cell lines for virus culture?
What happens in the lysogenic cycle of a temperate bacteriophage?
What happens in the lysogenic cycle of a temperate bacteriophage?
Which step in the life cycle of animal viruses involves the integration of the viral genome into the host cell genome?
Which step in the life cycle of animal viruses involves the integration of the viral genome into the host cell genome?
Which type of animal virus enters the host cell by fusing its envelope with the plasma membrane?
Which type of animal virus enters the host cell by fusing its envelope with the plasma membrane?
Which type of animal virus is taken into the cell by endocytosis?
Which type of animal virus is taken into the cell by endocytosis?
Which type of animal virus requires reverse transcriptase to generate a provirus?
Which type of animal virus requires reverse transcriptase to generate a provirus?
Which step in the life cycle of animal viruses involves the release of new virions from the host cell?
Which step in the life cycle of animal viruses involves the release of new virions from the host cell?
Which type of agents can inactivate viruses?
Which type of agents can inactivate viruses?
Which of the following is true about antiviral drugs?
Which of the following is true about antiviral drugs?
What is the mode of action of neuraminidase inhibitors?
What is the mode of action of neuraminidase inhibitors?
Which of the following is an example of a reverse transcriptase inhibitor?
Which of the following is an example of a reverse transcriptase inhibitor?
What is the mode of action of protease inhibitors?
What is the mode of action of protease inhibitors?
Which of the following best describes a virus?
Which of the following best describes a virus?
What is the primary function of a virion?
What is the primary function of a virion?
What is the difference between host range and tissue specificity in viruses?
What is the difference between host range and tissue specificity in viruses?
Which of the following is NOT a mode of transmission for viruses?
Which of the following is NOT a mode of transmission for viruses?
What is the role of arthropods in viral transmission?
What is the role of arthropods in viral transmission?
Which of the following is a characteristic of primary cell cultures?
Which of the following is a characteristic of primary cell cultures?
Which of the following is NOT a virus-like agent?
Which of the following is NOT a virus-like agent?
Which of the following is true about viroids?
Which of the following is true about viroids?
Which of the following is true about virusoids?
Which of the following is true about virusoids?
Which of the following is true about prions?
Which of the following is true about prions?
Which type of antiviral drug directly binds to reverse transcriptase and inhibits transcription, preventing synthesis of DNA in retroviruses?
Which type of antiviral drug directly binds to reverse transcriptase and inhibits transcription, preventing synthesis of DNA in retroviruses?
Which antiviral drug is used to treat respiratory syncytial virus (RSV)?
Which antiviral drug is used to treat respiratory syncytial virus (RSV)?
Which antiviral drug blocks fusion of the HIV envelope with the host cell plasma membrane?
Which antiviral drug blocks fusion of the HIV envelope with the host cell plasma membrane?
Which antiviral drug prevents the development of Influenza A?
Which antiviral drug prevents the development of Influenza A?
Which physical agent can inactivate viruses?
Which physical agent can inactivate viruses?
Which step in the one-step multiplication curve of a bacteriophage population involves the attachment of virions to host cells?
Which step in the one-step multiplication curve of a bacteriophage population involves the attachment of virions to host cells?
Which of the following best describes a virus?
Which of the following best describes a virus?
What is the purpose of centrifugation or filtration in the isolation of viruses?
What is the purpose of centrifugation or filtration in the isolation of viruses?
What is the primary function of a virion?
What is the primary function of a virion?
Which type of cell culture has a limited life span and is prone to contact inhibition?
Which type of cell culture has a limited life span and is prone to contact inhibition?
What is the host range of a virus?
What is the host range of a virus?
Which step in the life cycle of T-even bacteriophage involves the degradation of the bacterial chromosome and synthesis of multiple copies of viral DNA?
Which step in the life cycle of T-even bacteriophage involves the degradation of the bacterial chromosome and synthesis of multiple copies of viral DNA?
How can viruses be transmitted from one host to another?
How can viruses be transmitted from one host to another?
What is the main reason why animal viruses require cells within a host animal or tissue-culture cells for cultivation?
What is the main reason why animal viruses require cells within a host animal or tissue-culture cells for cultivation?
What is the role of reverse transcriptase in the replication of RNA viruses?
What is the role of reverse transcriptase in the replication of RNA viruses?
Which step in the life cycle of animal viruses involves the fusion of the viral envelope with the plasma membrane of the host cell?
Which step in the life cycle of animal viruses involves the fusion of the viral envelope with the plasma membrane of the host cell?
Which type of animal virus requires the synthesis of a complementary strand before it can replicate its genome?
Which type of animal virus requires the synthesis of a complementary strand before it can replicate its genome?
Which type of RNA virus must first use its negative-sense RNA as a template to synthesize positive-sense RNA before viral proteins can be synthesized?
Which type of RNA virus must first use its negative-sense RNA as a template to synthesize positive-sense RNA before viral proteins can be synthesized?
Which step in the viral growth curve is characterized by a very steep rise in viral titer, indicating the release of a large number of viral particles?
Which step in the viral growth curve is characterized by a very steep rise in viral titer, indicating the release of a large number of viral particles?
Which type of animal virus can enter a dormant phase within the host cell nucleus and reactivate under stress?
Which type of animal virus can enter a dormant phase within the host cell nucleus and reactivate under stress?
Which type of viruses have an envelope in addition to a capsid?
Which type of viruses have an envelope in addition to a capsid?
Which step in the life cycle of T-even bacteriophage involves the degradation of the bacterial chromosome and synthesis of multiple copies of viral DNA?
Which step in the life cycle of T-even bacteriophage involves the degradation of the bacterial chromosome and synthesis of multiple copies of viral DNA?
What is the function of Neuraminidase (N) spike in the Influenza virus?
What is the function of Neuraminidase (N) spike in the Influenza virus?
What is the burst size in the context of a bacteriophage population?
What is the burst size in the context of a bacteriophage population?
Which enzyme do neuraminidase inhibitors target?
Which enzyme do neuraminidase inhibitors target?
Which of the following is a characteristic of primary cell cultures?
Which of the following is a characteristic of primary cell cultures?
Which of the following is NOT a characteristic of viroids?
Which of the following is NOT a characteristic of viroids?
Which of the following is a characteristic of virusoids?
Which of the following is a characteristic of virusoids?
Which of the following is true about prions?
Which of the following is true about prions?
Which of the following is NOT a disease caused by prions?
Which of the following is NOT a disease caused by prions?
