Podcast
Questions and Answers
What is the lytic cycle?
What is the lytic cycle?
- A viral reproductive cycle that causes the host cell to die (correct)
- A viral reproductive cycle where the virus remains dormant
- A way for viruses to spread through the environment
- A process of viral attachments to host cells
What are the stages of the lytic cycle?
What are the stages of the lytic cycle?
Attachment, Entry, Replication, Assembly, Lysis
What happens during the attachment stage of the lytic cycle?
What happens during the attachment stage of the lytic cycle?
The virus attaches to a host cell by locking onto a specific receptor.
What occurs during the entry stage of the lytic cycle?
What occurs during the entry stage of the lytic cycle?
What is replication in the context of the lytic cycle?
What is replication in the context of the lytic cycle?
What occurs during the assembly stage of the lytic cycle?
What occurs during the assembly stage of the lytic cycle?
What happens during lysis and release in the lytic cycle?
What happens during lysis and release in the lytic cycle?
What is the lysogenic cycle?
What is the lysogenic cycle?
What is a prophage?
What is a prophage?
What triggers the transition from the lysogenic cycle to the lytic cycle?
What triggers the transition from the lysogenic cycle to the lytic cycle?
Flashcards
Lytic Cycle
Lytic Cycle
A viral reproductive cycle where the virus replicates within the host cell, ultimately causing the host cell to burst and release new virus particles.
Attachment (Lytic Cycle)
Attachment (Lytic Cycle)
The phase where the virus attaches to a host cell by binding to specific receptors on the cell surface.
Entry (Lytic Cycle)
Entry (Lytic Cycle)
The phase where the virus injects its genetic material (DNA or RNA) into the host cell.
Replication (Lytic Cycle)
Replication (Lytic Cycle)
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Assembly (Lytic Cycle)
Assembly (Lytic Cycle)
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Lysis and Release (Lytic Cycle)
Lysis and Release (Lytic Cycle)
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Lysogenic Cycle
Lysogenic Cycle
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Prophage
Prophage
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Triggers for Lytic Cycle
Triggers for Lytic Cycle
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Integration (Lysogenic cycle)
Integration (Lysogenic cycle)
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Study Notes
Lytic Cycle
- A viral reproductive cycle resulting in the death of the host cell.
- Involves virulent phages, which reproduce solely through this cycle.
Stages of the Lytic Cycle
- Attachment: Virus binds to a specific receptor on the host cell's surface.
- Entry: Viral DNA is injected into the host, while the viral coat remains outside.
- Replication: Host cell's metabolic functions are hijacked to produce viral components.
- Assembly: New viral parts are assembled into complete virus particles.
- Lysis and Release: Host cell bursts, releasing new viruses to infect adjacent cells.
Lysogenic Cycle
- A viral reproductive cycle where the phage genome replicates without destroying the host cell.
- Involves temperate phages capable of switching between lytic and lysogenic cycles.
Silent Phage Genome
- When integrated into the host's chromosome, the viral DNA is termed a prophage.
- A specific gene on the prophage produces a protein that inhibits transcription of other prophage genes, rendering the viral genome mostly inactive.
Trigger for Cycle Entry
- The choice between lytic and lysogenic cycles is influenced by receptor interactions on the host cell membrane.
- Environmental factors such as mutagens (e.g., radiation, certain chemicals) can trigger the transition to the lytic cycle by activating the viral genome to exit the bacterial chromosome.
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Description
Explore the fascinating processes of viral reproduction through the lytic and lysogenic cycles. This quiz covers the stages of the lytic cycle and introduces the concept of temperate phages in the lysogenic cycle. Test your understanding of viral behaviors and their impact on host cells.
