What is bacteria,bacilli,cocci,spirill... and flagella?

What are those like a short definition...?

What is bacteria,bacilli,cocci,spirill... and flagella?
Bacteria are a type of life that are single cellular and prokaryotic (don't have a defined nucleus)





Bacilli, cocci, spirilla are cell shapes:


bacilli= rod shaped


cocci = round spheres


spirilla = spiral shaped





Flagella is an organelle that allows the cells to swim. (it's kind of like a fish's tail, in that sense)





Pictures of these shapes:


http://en.wikipedia.org/wiki/Bacillus


http://en.wikipedia.org/wiki/Cocci


http://microbewiki.kenyon.edu/index.php/...
Reply:Bacteria-any of a domain (Bacteria) of prokaryotic round, spiral, or rod-shaped single-celled microorganisms that may lack cell walls or are gram-positive or gram-negative if they have cell walls, that are often aggregated into colonies or motile by means of flagella, that typically live in soil, water, organic matter, or the bodies of plants and animals, that are usually autotrophic, saprophytic, or parasitic in nutrition, and that are noted for their biochemical effects and pathogenicity


flagella- any of various elongated filiform appendages of plants or animals


bacilli-any of a genus (Bacillus) of rod-shaped gram-positive usually aerobic bacteria producing endospores and including many saprophytes and some parasites thats all i got