<prompt> Which of the following organisms is a natural transformer?Escherichia coliNeisseria gonorrhoeaePlasmodium vivaxPseudomonas aeruginosa  <response>: Transformation is the uptake and integration of naked DNA by a bacteria from the environment. Transformation can be induced in the laboratory a technique used to introduce gene-carrying plasmids into bacteria or, relatively uncommonly, occurs naturally. Only a few medically impoant species undergo natural transformation: Haemophilus species, Streptococcus species, Neisseria gonorrhoeae, and Helicobacter pylori. Ref: Levinson W. 2012. Chapter 4. Genetics. In W. Levinson Ed, Review of Medical Microbiology Immunology, 12e. 