REAL INVASION UFO : E. coli can cause diarrhea, urinary tract infections, respiratory illness, bloodstream infections, and other illnesses. Other kinds of E. coli are used as markers for water contamination—so you might hear about E. coli being found in drinking water, which are not harmful, but indicate the water is contaminated. It does get a bit confusing—even to microbiologists.The lytic lifecycle (from entering a bacterium to its destruction) takes approximately 30 minutes (at 37 °C) and consists of:[citation needed] Adsorption and penetration (starting immediately) Arrest of host gene expression (starting immediately) Enzyme synthesis (starting after 5 minutes) DNA replication (starting after 10 minutes) Formation of new virus particles (starting after 12 minutes) After the life cycle is complete, the host cell bursts open and ejects the newly built viruses into the environment, destroying the host cell. T4 has a burst size of approximately 100-150 viral particles per infected host. Complementation, deletion, and recombination tests can be used to map out the rII gene locus by using T4. These bacteriophage infect a host cell with their information and then blow up the host cell, thereby propagating themselves.
Posted on: Tue, 09 Sep 2014 23:19:58 +0000
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