BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A large number of phages are released at a time
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The virus-host relationship usually lasts for generations
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Viral DNA is incorporated into the host genome
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The viral genome replicates without destroying the host
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Detailed explanation-1: -Answer and Explanation: The answer is C) A large number of phages are released at a time. The bacteriophage, or phage for short, is thought to be the most abundant entity on the planet.
Detailed explanation-2: -In the lytic cycle, a phage acts like a typical virus: it hijacks its host cell and uses the cell’s resources to make lots of new phages, causing the cell to lyse (burst) and die in the process.
Detailed explanation-3: -The enzymes produced by the phage gradually weaken the bacterial cell wall and eventually the bacterial cells lyse, releasing on average 100-200 phage progeny into the surrounding environment.
Detailed explanation-4: -Which characteristic is not associated with Lytic-cycle(a) Death of host cell (b) Viruses are virulent(c) Formation of prophage (d) Bacterial cell fails to reproduce. AI Recommended Answer: 1. Death of host cell is not associated with Lytic-cycle.
Detailed explanation-5: -In a lytic cycle, the virus introduces its genome into a host cell and initiates replication by hijacking the host’s cellular machinery to make new copies of the virus. Once infection is complete, the newly replicated and assembled virus particles are released through lysis of the host cell into the surrounding waters.