Describe the lytic and lysogenic cycles of virus replication Flashcards
What is the lytic cycle?
The lytic cycle is a viral replication process that results in the destruction of the host cell and the release of new viral particles.
True or False: In the lysogenic cycle, the viral DNA integrates into the host cell’s genome.
True
Fill in the blank: During the lytic cycle, the virus uses the host’s cellular machinery to ____ and ____ new viral particles.
replicate, assemble
What is a key difference between the lytic and lysogenic cycles?
The lytic cycle leads to cell lysis and release of viruses, while the lysogenic cycle allows the virus to remain dormant within the host genome.
Name one example of a virus that primarily uses the lytic cycle.
T4 bacteriophage
What triggers the switch from the lysogenic cycle to the lytic cycle?
Environmental factors or stress conditions that activate the viral genome.
Multiple Choice: Which of the following is NOT a step in the lytic cycle? A) Attachment B) Integration C) Replication D) Assembly
B) Integration
What is a prophage?
A prophage is the dormant form of a virus that integrates into the bacterial host’s genome during the lysogenic cycle.
True or False: The lysogenic cycle can lead to the production of viral particles immediately.
False
Short Answer: Describe the role of viral enzymes in the lytic cycle.
Viral enzymes help to degrade the host cell’s DNA and facilitate the replication and assembly of new viral particles.