Summarize the lytic cycle.
10.7A: The Lytic Life Cycle of Bacteriophages - Biology LibreTexts
a
A virus injects its genetic material into the host cell, copies itself using the host's structures and resources, and then forms new viruses that burst out of the host cell.
b
The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself.
c
A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
d
A virus copies its own genetic material and then splits its cell membranes in half to form two identical viruses.
The lytic cycle refers to the process by which a virus infects a host cell, replicates within the cell, and then releases newly formed viruses by bursting out of the host cell. This cycle involves the injection of the virus's genetic material into the host cell, which then uses the cell's structures and resources to copy the viral genetic material and synthesize new viral components. Ultimately, the host cell becomes filled with new viruses and eventually bursts, releasing the viruses to infect other cells.
The lytic cycle is a process in which a virus infects a host cell, replicates its genetic material using the host's resources, and then produces new viruses that burst out of the host cell. The steps involved in the lytic cycle are as follows:
1. Attachment: The virus attaches itself to the surface of the host cell.
2. Penetration: The virus injects its genetic material, which can be DNA or RNA, into the host cell.
3. Replication: The viral genetic material incorporates itself into the host cell's DNA and replicates along with the host cell's genetic material whenever the host cell replicates itself.
4. Assembly: The viral components, including the replicated genetic material, are assembled inside the host cell.
5. Lysis: The newly formed viruses break open the host cell, causing it to burst, and are released into the surrounding environment. These viruses can then go on to infect other cells.
Overall, the lytic cycle is a rapid and destructive process that ultimately leads to the death of the host cell.
The lytic cycle is a process observed in the life cycle of viruses called bacteriophages. Bacteriophages specifically infect bacteria. Here is a summary of the lytic cycle:
1. Attachment: The bacteriophage attaches itself to the surface of the host bacterial cell.
2. Entry: The bacteriophage injects its genetic material (either DNA or RNA) into the host cell.
3. Replication: Once inside the host cell, the viral genetic material takes control of the host cell's machinery. It uses the host cell's resources and structures to replicate its own genetic material and produce viral components.
4. Assembly: The newly replicated viral components are assembled, forming complete viruses inside the host cell.
5. Bursting: Enzymes are produced by the bacteriophage that weaken the cell wall of the host bacterium. As a result, the host cell bursts open or lyses, releasing the newly formed viruses.
6. Release: The released viruses can now go on to infect other bacterial cells and repeat the lytic cycle.
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