- Definition: Bacteria are a large group of unicellular microorganisms. They come in various shapes and sizes and can be found in almost every habitat on Earth. Bacteria play critical roles in ecosystems and human health, both as beneficial organisms (such as in digestion and in certain food production processes) and as pathogens causing diseases.
- Etymology and Origin: The word “bacteria” is derived from the Greek word “baktēria,” meaning “little staff” or “rod.” This is in reference to the shape of the first observed bacteria, which were rod-shaped. The term was introduced in the 19th century by German biologist Ferdinand Cohn, who is considered one of the founders of modern bacteriology.
Bacteria Definition and Origin: Exploring Microscopic Marvels
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