Currently viewing the tag: "antibiotic"
M. haemolytica is responsible for causing contagious bovine pleuropneumonia, a bacterial disease which causes pneumonia and inflammation of the lung membranes and Bordetella bronchiseptica is an evolutionary progenitor of B. pertussis and is one of the organisms responsible for causing kennel cough in dogs.
The generic purpose of an antibiotic is to prevent the growth and/or survival of invading organisms whilst causing minimal damage and toxicity to the host. The typical mechanism of antibiotic action involves targeting specific enzymes or substrates of the invading bacterial species.
Staphylococcus is a gram positive, cocci shaped, genus of bacteria. Observed under a microscope will reveal they exist in microscopic ‘grape-like’ clusters. One species of staphylococci, Staphylococcus aureus, can grow at temperature ranges of 15-45ºC and at a relatively high NaCl concentration of 15%.
Point Mutations
Much like humans, bacteria are subject to evolution. Evolution occurs through beneficial mutations in the DNA. Because bacteria have much shorter generation times than humans, the process of evolution occurs much more rapidly. An example of how bacteria evolve through mutation is point mutation.
Point mutation is the random mutation of DNA nucleotides [...]
