Lysogenic Cycle Concepts and Processes

The video explains viral replication through the lysogenic cycle, detailing five stages: attachment, entry, replication, assembly, and release. The virus attaches to the host cell, enters it, and integrates its DNA, forming a provirus. During replication, viral DNA becomes active, leading to the creation of new viral components. These components self-assemble into new viruses, which are eventually released from the host cell, continuing the cycle. The video concludes with a practice quiz for students.

What is the first stage of the lysogenic cycle where the virus attaches to the host cell?

• Replication

• Attachment

• Release

• Entry

During the entry stage, what happens to the viral DNA?

• It immediately starts replication

• It combines with the host cell's DNA

• It is destroyed by the host cell

• It remains outside the host cell

What happens to the host cell's DNA during the entry stage?

• It is destroyed

• It combines with viral DNA to form a provirus

• It becomes inactive

• It exits the host cell

What does the term 'latent period' refer to in the lysogenic cycle?

• The virus actively replicates

• The virus is dormant within the host cell

• The host cell is destroyed

• The virus exits the host cell

What is the significance of the provirus during the latent period?

• It actively replicates

• It remains dormant and is copied during cell division

• It exits the host cell

• It is destroyed by the host cell

What process occurs during the replication stage of the lysogenic cycle?

• The virus exits the host cell

• The viral DNA becomes active and replicates

• The virus attaches to a new host cell

• The host cell is destroyed

What is the role of ribosomes during the replication stage?

• They destroy the viral DNA

• They create proteins for the virus

• They help the virus attach to the host cell

• They release the virus from the host cell

What happens during the assembly stage of the lysogenic cycle?

• The host cell repairs itself

• New viruses are assembled from viral components

• The viral DNA is destroyed

• The virus attaches to a new host cell

How are new viruses released from the host cell during the release stage?

• By the virus dissolving the host cell

• By the host cell bursting

• By the host cell dividing

• Through the host cell's natural processes

What is the result of the host cell bursting during the release stage?

• The virus is destroyed

• The host cell repairs itself

• Multiple new viruses are released

• The host cell becomes immune