Reference Terms
from Wikipedia, the free encyclopedia

Bacteria

Bacteria (singular: bacterium) are a major group of living organisms.

Most are microscopic and unicellular, with a relatively simple cell structure lacking a cell nucleus, and organelles such as mitochondria and chloroplasts.Bacteria are the most abundant of all organisms.

Many pathogens, disease-causing organisms, are bacteria.

Note:   The above text is excerpted from the Wikipedia article "Bacteria", which has been released under the GNU Free Documentation License.
Related Stories
 

Share This Page:


Plants & Animals News
September 2, 2015

Latest Headlines
updated 12:56 pm ET