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BACTERIA CELLS:  Page 1

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Teachers, Students, Home School Scholars, and Inquiring Minds of all ages --

Bacteria are extremely diverse in shape and the environmental niches they populate. 

While we often first think of the bacteria that cause disease, there are enormous numbers of bacteria types that are essential in our ecosystem.

For instance, bacteria that live in the soil convert nitrogen gas (from the air) into 'fixed nitrogen' by catalyzing a reaction that creates amino acids.  Fixed nitrogen thereby become available in the soil and plants use it as a source of nitrogen.  Then humans and other animals eat the plants and continue to use the nitrogen 'fixed' by soil bacteria to create proteins and other compounds essential to our type of life.

Bacteria are called 'procaryotes' - which means they have a type of cell which has no internal, organizing structures (called organelles).  The DNA, RNA, ribosomes, and other important features of all cells, are simply in one compartment. 

Bacteria are single-celled organisms and represent some of the least complicated forms of life on earth.

 

BACTERIAL CELLS:  Page 1

Bacteria Links of choice:
Virtual Cell - Cell Biology textbook with great graphics
Wikipedia - DNA replication
Cells Alive - bacteria cell

 

Learn more! Google:
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