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What is true about a lysogenic infection?
In a lysogenic infection, the viral DNA integrates into the host cell genome and remains dormant for a period of time. The host cell replicates with the viral DNA as part of its own DNA. Lysogenic infections can later transition into a lytic cycle, where the virus becomes active and replicates to produce new viruses.
How are lysogenic and lytic cycles different?
the lytic cycle causes disease apex 2.1.6 During the iysogenic cycle, the cell is not killed
Describe what happens to the host cell of a lysogenic virus?
In the lysogenic cycle, the viral DNA or RNA enters the cell and integrates into the host DNA as a new set of genes called prophage. That is, the viral DNA becomes part of the cell's genetic material. It does not destroy the host cell.
In the lytic cycle the host cell?
In the lysogenic cycle, the viral DNA or RNA enters the cell and integrates into the host DNA as a new set of genes called prophage. That is, the viral DNA becomes part of the cell's genetic material. It does not destroy the host cell.
What happens first when a phage infects a bacterial cell and is going to enter a lysogenic cycle?
it becomes a part of the bacterial DNA and it can be replicated into the daughter cells. this cycle doesn't harm the bacterial cell but it can change into the lysis cycle and kill the host cell
Does Measles go through the lysogenic life cycle or lytic life cycle?
Measles goes through the lytic life cycle, where the virus enters a host cell, replicates, and then destroys the host cell to release new viral particles. This leads to symptoms associated with the infection.
When a virus takes over a cell what part of the virus takes over the cells functions?
The easiest way to understand how viruses replicate is to study the life cycles of viruses called bacteriophages (bacteria eaters). Bacteriophages replicate by either a lytic cycle or a lysogenic cycle. The difference in these two cycles is that the cell dies at the end of the lytic cycle or the cell remains in the lysogenic cycle. The virus remains "hidden".
What is true about a lysogenic infection?
In a lysogenic infection, the viral DNA integrates into the host cell genome and remains dormant for a period of time. The host cell replicates with the viral DNA as part of its own DNA. Lysogenic infections can later transition into a lytic cycle, where the virus becomes active and replicates to produce new viruses.
How are lysogenic and lytic cycles different?
the lytic cycle causes disease apex 2.1.6 During the iysogenic cycle, the cell is not killed
What does it mean for a virus to have a lysogenic reproductive cycle?
The lysogenic cycle replicates the phage genome without destroying the host. Similar to Lytic reproduction, Lysogenic also begins when the phage inserts its DNA or RNA into the host cell through its surface. Once the nucleic acid is inside the cell, it forms a circle, and becomes a part of the genome of the host cell. It does this through genetic recombination, or crossing over. Once it joins the host’s genome, it is called a prophage. Since it is a part of the host cell’s genome, the phage’s genetic information is copied and distributed to the daughter cells of the host cell, which continues dividing naturally. This allows the prophage to be repeatedly copied and passed on without destroying the host cell it depends on for metabolic and reproduction purposes. In order for actual active phages to be produced, the segment of genome from the original phage exits the genome of the host cell and becomes independent. When this occurs, it begins the lytic cycle, destroying the cell, but producing new and functional phages.
During the lysogenic cycle is a provirus part of a host cell's chromosome?
Yes, during the lysogenic cycle of a viral infection, a provirus integrates into the host cell's chromosome. The provirus DNA becomes part of the host cell's genetic material and is replicated along with the host DNA during cell division.
Describe what happens to the host cell of a lysogenic virus?
In the lysogenic cycle, the viral DNA or RNA enters the cell and integrates into the host DNA as a new set of genes called prophage. That is, the viral DNA becomes part of the cell's genetic material. It does not destroy the host cell.
What is the difference between a virulent phage and a temperate phage?
In virology, temperate refers to the life cycle some phages are able to perform. Atemperate phage can integrate its genome into its host bacterium's chromosome, becoming a lysogen known as a prophage. A temperate phage is also able to undergo lytic life cycles, where the prophage is expressed, replicates the phage genome and produces phage progeny and the progeny phage leave the bacterium. The virulent phages have only lytic lifecycles and thus infection results in the host cell's death (due to lytic cell destruction-the phage replicates itself and then bursts the cell, releasing many copies).
What is lytic infection?
On an x-ray, lytic lesions are light areas found in otherwise dense bone. This suggests something has destroyed or replaced that part of bone. There are both cancerous and noncancerous causes of lytic lesions.
In the lytic cycle the host cell?
In the lysogenic cycle, the viral DNA or RNA enters the cell and integrates into the host DNA as a new set of genes called prophage. That is, the viral DNA becomes part of the cell's genetic material. It does not destroy the host cell.
What happens first when a phage infects a bacterial cell and is going to enter a lysogenic cycle?
it becomes a part of the bacterial DNA and it can be replicated into the daughter cells. this cycle doesn't harm the bacterial cell but it can change into the lysis cycle and kill the host cell
Do viruses replicate by binary fission?
No. The construction of a virus takes place inside of a host cell. The virus is 'not involved' in its own reproduction (in a manner of speaking). Viruses do not reproduce as cells do. A virus operates by injecting its genetic material and sometimes accompanying enzymes into a cell. It then essentially hijacks the cell and forces it to create more of the virus, usually killing the cell in the process.
