Do plasmids work in bacteria?

If plasmids inside a bacteria are just non-essential rings of DNA, does that mean that the DNA on the plasmids do not do any effect to the bateria? In other words, the DNA on the plasmids of a bacteria is not read/transcribed/translated?

If this is so, why would a recombinant plasmid with antibiotic resistance work in a bacteria against an environment with antibiotic?

Comments

  • The DNA is transcribed and will produce any proteins that are encoded on hte plasmid. Yes they work in bacteria (and are passed from one bacteria to another under the right conditions. Bacteria like to share their genetic material with other bacteria. ) Bacteria that have a recomb plasmid with genes for antibiotic resistance can survive in antibiotic.

  • There are regions that attract the polymerase. Its sequences of DNA such as the T7 bacteriophage sequence that were implemented within the plasmids, which increases the rate at which the acteria actually reads/transcribed the proteins on the plasmids.

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