Multiple Choice
Which statement best describes where viruses, as pathogens, are found?
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17. Viruses
Viruses
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How is the lytic cycle different from the lysogenic cycle with respect to the infected host cell?
A
The lytic cycle involves the host cell producing viral proteins indefinitely, while the lysogenic cycle stops viral replication.
B
The lytic cycle integrates the viral DNA into the host genome, while the lysogenic cycle results in the destruction of the host cell.
C
The lytic cycle allows the host cell to replicate normally, while the lysogenic cycle immediately destroys the host cell.
D
The lytic cycle results in the destruction of the host cell, while the lysogenic cycle integrates the viral DNA into the host genome without immediate destruction.
Verified step by step guidance1
Understand the lytic cycle: In the lytic cycle, the virus infects the host cell and takes over the cell's machinery to produce new viral particles. This process eventually leads to the destruction of the host cell as it bursts open, releasing the new viruses.
Understand the lysogenic cycle: In the lysogenic cycle, the viral DNA is integrated into the host cell's genome. The virus remains dormant within the host cell and does not cause immediate harm. The host cell continues to replicate normally, passing the viral DNA to its daughter cells.
Compare the two cycles: The key difference is that the lytic cycle results in the destruction of the host cell, while the lysogenic cycle allows the host cell to survive and replicate with the viral DNA integrated into its genome.
Clarify misconceptions: The lytic cycle does not involve indefinite production of viral proteins; it leads to cell lysis. The lysogenic cycle does not stop viral replication; it allows the virus to replicate passively as part of the host genome.
Identify the correct answer: The lytic cycle results in the destruction of the host cell, while the lysogenic cycle integrates the viral DNA into the host genome without immediate destruction.
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