unicellular
antibiotics
They all cause disease.
they can fix nitrogen
There are many human diseases caused by bacteria. Two examples are salmonella and e coli.
You were given a list. We don't have the list so can't give you an answer.
Genetic exchanges among bacteria occur by several mechanisms. In transformation, the recipient bacterium takes up extracellular donor DNA. In transduction, donor DNA packaged in a bacteriophage infects the recipient bacterium. In conjugation, the donor bacterium transfers DNA to the recipient by mating.