Question

Two strains of E. coli cells, one containing a temperate or prophage (lysogenic infection), and one with no prophage, are both subjected to the same stressful treatment to the cells. The strain with the temperate phage rapidly lyse. What was the most likely effect of the treatment on the cells which lysed?

the treatment induced cellular damage and induced phage excision and the lytic cycle the

treatment blocked DNA replication and induced lysogeny

the treatment inhibited nuclear export

the treatment disrupted the plasma membrane

the treatment cleaved the peptidoglycan

Answer 1

Remember that a prophage is the genetic material from a phage/virus, it does not have the whole proteic capsule but the fucntional DNA is being inserted into the cell. In the lysogenic cycle the genetic material is incorporated into the bacterial chromosome, letting it live and even divide, eventually the lytic cycle starts and the phage is expressed to form new phages, this process kill the bacterial cell.

If our bacteria are quickly lysed, then it means the lytic cycle is just readily occurring. The answer is the first long option: the treatment induced cellular damage and induced phage excision and the lytic cycle