Bacteria often become resistant through different kinds of mechanisms. One kind of mechanism is never confined to any specific class of antibiotics. Different resistance mechanisms are used in different bacteria to confront the same antibiotics. Prevention of Drug’s Entry, Driving out the drug, and altering or degrading the antibiotics are some of the examples of mechanisms of antibiotic resistance employed by bacteria.
Several Bacteria (like Escherichia Coli) exhibit a form of sexual reproduction called Bacterial Conjugation. It is the transfer of genetic material between bacterial cells by direct cell-to-cell contact or by a bridge-like connection between two cells.