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Bacteria - Wikipedia
The word bacteria is the plural of the New Latin bacterium, which is the latinisation of the Greek βακτήριον (bakterion), the diminutive of βακτηρία (bakteria), meaning "staff, cane", because the first ones to be discovered were rod-shaped.. Origin and early evolution
bacteria | Cell, Evolution, & Classification | Britannica.com
Bacteria, singular bacterium, any of a group of microscopic single-celled organisms that live in enormous numbers in almost every environment on Earth, from deep-sea vents to deep below Earth’s surface to the digestive tracts of humans.. Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes.
Bacteria: Definition, Types & Infections
Bacteria are microscopic single-celled organisms that thrive in diverse environments. They can live within soil, in the ocean and inside the human gut.
Bacteria: What you need to know - Medical News Today
Bacteria are single-celled organisms that exist in their millions, in every environment, inside or outside other organisms. Some are harmful, but others support life. They play a crucial role in ...
About Microbiology – Bacteria
If you pick up a handful of garden soil you will be holding hundreds if not thousands of different kinds of microbes. One single teaspoon of soil contains 1 billion bacteria & 120,000 fungi & 25,000 algae
Molecular Expressions Cell Biology: Bacteria Cell Structure
One of the earliest prokaryotic cells to have evolved, bacteria have been around for at least 3.5 billion years and live in just about every environment imaginable. Explore the structure of a bacteria cell with our three-dimensional graphics.