For population 25 years and over in Revere: 1  High school or higher: 82.2%. 2  Bachelor's degree or higher: 19.5%. 3  Graduate or professional degree: 6.2%. 4  Unemployed: 5.7%. 5  Mean travel time to work (commute): 33.2 minutes.
Plasmids are extra chromosomal, double stranded, circular DNA molecules present in bacteria. Different kinds of bacterial plasmids based on encoded genes (their roles). F-plasmids (fertility factor or sex factors): Bacterial cells with F plasmids are called F+ cells and acts as donor cells or +strain during bacterial conjugation.
1 Virtually all plasmids that are used to deliver DNA contain genes for antibiotic resistance. 2  Once bacteria have been treated with a plasmid, scientists grow them in the presence of antibiotic. 3  Only those cells that contain the plasmid will survive, grow and reproduce.lasmids help bacteria to survive stress. Antibiotic resistance. Plasmids contain just a few genes, but they make a big difference to their host bacterium. The genes are usually not essential for the bacteriumâs day-to-day survival â instead, they help the bacterium to overcome occasional stressful situations.