Question

why lysogenic bacteria are resistant to infection?​

Answer 1

Explanation:

A lysogenic bacterium, or lysogen, is resistant to subsequent infection, because an “immunity” is conferred by the presence of the prophage. The lysogenic state can be transmitted genetically through many bacterial generations.

Answer 2

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ANSWER:-

Phages are categorized into two types. Virulent phages are always lytic; that is, they infect and lyse the host cell, resulting in progeny phages. In contrast, temperate phages can undergo a lytic cycle under some circumstances, but more often the phage integrates into the bacterial chromosome and henceforth the inserted phage is replicated along with the bacterial chromosome. In this condition, the phage is referred to as a prophage and the bacterial host is called lysogenic. A lysogenic bacterium, or lysogen, is resistant to subsequent infection, because an “immunity” is conferred by the presence of the prophage. The lysogenic state can be transmitted genetically through many bacterial generations. However, a prophage can occasionally excise from the bacterial chromosome and enter a lytic cycle, leading to lysis of its host cell and the production of a large number of progeny phages, referred to as a lysate. These progeny phages can infect and cause lysis in any nonlysogenic cells present in the same culture. (The word lysogenic means “lysis causing” as the property of self-immunity, but ability to lyse other genotypes was the way that this condition was first identified.)

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