Similar term(s): bacterium.
Bacteria are a major group of micro-organisms that live in soil, water,
plants, organic matter, or the bodies of animals or people. They are microscopic
and mostly unicellular, with a relatively simple cell structure.
Some bacteria cause diseases such as tetanus, typhoid fever, pneumonia,
syphilis, cholera, and tuberculosis.
Bacteria play a role in the decomposition of organic matter and other chemical
Example: Cholera bacteria
Source: Dartmouth College
Dartmouth Electron Microscope
Antibiotics - Bt - Cell - Micro-organism - Tuberculosis
To read about this term in context:
GreenFacts Summary on Respiratory Diseases in Children: