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Questions and Answers
What is a provirus?
What is a provirus?
When viral DNA integrates into the host chromosome and never comes out, protected from the host's immune system and antiviral drugs.
What is a prophage?
What is a prophage?
A prophage can excise and enter the lytic cycle.
Define oncogene.
Define oncogene.
Transforming normal cells into cancerous cells due to mutagens, radiation, viruses, etc.
Describe latent viral infections.
Describe latent viral infections.
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Describe persistent viral infections.
Describe persistent viral infections.
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What is a host range?
What is a host range?
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Study Notes
Provirus
- Refers to viral DNA integrated into the host chromosome.
- Remains permanently within the host cell, providing protection from the immune system and antiviral medications.
Prophage
- A form of viral DNA that can excise itself from the host chromosome.
- Capable of entering the lytic cycle, which leads to viral replication and cell lysis.
Oncogene
- A gene that has the potential to convert normal cells into cancerous cells.
- Activation can result from mutagens, radiation exposure, or certain viral infections.
Latent Viral Infections
- Viral infections that stay dormant within a host cell without causing disease for an extended period.
- Can reactivate due to immunological changes or other stressors on the host.
Persistent Viral Infections
- Infections that develop slowly and remain over a long duration, often leading to severe outcomes or death.
- Characterized by a gradual accumulation of the virus, rather than a sudden onset.
Host Range
- Defines the variety of host cells or organisms that a specific virus can infect.
- Determines the virus's ability to spread and establish infections in different species or cell types.
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Description
Test your knowledge on key biological terms from Chapter 13. This quiz covers definitions such as provirus, prophage, and oncogene. Perfect for students preparing for exams in molecular biology.
