Procaryotae
The definitions used in this glossary of terminology either have been provided by the authors of the articles, or have been extracted wholly or in part, or paraphrased from the following sources: The American Medical Association Encyclopedia of Medicine, Charles B. Clayman, MD, Medical Editor, Random House, New York, 1989; Biotechnology from A to Z, 2d Edition, William Bains, Oxford University Press, New York, New York, 2002; A Dictionary of Genetics, 6th Edition, Robert C. King and William D. Stansfield, Oxford University Press, New York, New York, 2002; Dorland's Illustrated Medical Dictionary, 29th and 30th Editions, W. B. Saunders Company, Philadelphia, 2000, 2003; Genes VII, Benjamin Lewin, Oxford University Press, New York, New York, 2000; The Gale Encyclopedia of Genetic Disorders, Volumes I and II, Stacey L. Blachford, Ed., Thomson Learning, New York, New York, 2002; The Merriam-Webster Dictionary, Merriam-Webster, Inc., Springfield, Massachusetts, 1997; Molecular Biology of the Cell, 3rd Edition, Bruce Alberts, et al., Garland Publishing, 1994; The Random House Dictionary of the English Language, Unabridged Edition, 1966; Webster's Ninth New Collegiate Dictionary, 1991.
DEFINITION:
- Procaryotae
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A kingdom comprising all prokaryotic organisms and consisting of cellular organisms that lack a true nucleus (the bacteria). In one system of classification, it has two subdivisions, Cyanobacteria and Bacteria. In another system, the two subdivisions are Photobacteria and Scotobacteria. More recently the prokaryotes have been arranged in four divisions based on biochemical and phylogenetic analysis and the presence or absence and type of their cell walls:
Gracilicutes (those with thick, gram-negative-type cell walls).
Firmicutes (those with thick, strong, gram-positive-type cell walls).
Tenericutes (those without a cell wall).
Mendosicutes (those with faulty cell walls).
Used in 8 Term definitions
Used in 8 Term definitions