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- Bacteria cause disease by secreting or excreting toxins (as in botulism), by producing toxins internally, which are released when the bacteria disintegrate (as in typhoid), or by inducing sensitivity to their antigenic properties (as in tuberculosis).
www.britannica.com/science/bacterial-diseaseBacterial disease | Definition, Types, & Mechanisms | Britannica
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Bacteria are single-celled microorganisms that lack a nuclear membrane, are metabolically active and divide by binary fission. Medically they are a major cause of disease. Superficially, bacteria appear to be relatively simple forms of life; in fact, they are sophisticated and highly adaptable.
- Samuel Baron
- 1996
- 1996
Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.
- Madeline Drexler
- 2010
- 2010
The agents that cause disease fall into five groups: viruses, bacteria, fungi, protozoa, and helminths (worms). Protozoa and worms are usually grouped together as parasites, and are the subject of the discipline of parasitology, whereas viruses, bacteria, and fungi are the subject of microbiology.
- Charles A Janeway, Paul Travers, Mark Walport, Mark J Shlomchik
- 2001
- 2001
Aug 8, 2003 · Certain bacterial diseases caused by Y. pestis, Salmonella enterica, Borrelia burgdorferi, or multiresistant enterococci are dramatic examples underscoring the relevance of the host side of infection. With the advent of DNA sequencing, it has become possible to correlate infectious disease with prokaryotic genome structure.
- Jörg Hacker, Ute Hentschel, Ulrich Dobrindt
- 2003
Apr 21, 2024 · An infection is the successful colonization of a host by a microorganism. Infections can lead to disease, which causes signs and symptoms resulting in a deviation from the normal structure or functioning of the host. Microorganisms that can cause disease are known as pathogens.
Bacterium. Keywords. Cell, domain, phylogeny, prokaryote, tree of life. Definition. Bacteria are a large group of single-celled phylogenetically related prokaryotes distinct from Archaea. Bacteria have a wide range of shapes, ranging from spheres to rods and spirals.
