Prokaryote

online on 5 December 2005. Ji Qi, Bin Wang, and Bailin Hao, Whole genome prokaryote phylogeny without sequence alignment: a K-string composition approach

原核生物（英文：prokaryote）是通常由單一原核细胞形成的生物。相对于真核细胞，原核细胞一般没有细胞内膜、没有核膜包裹的成型细胞核，细胞内无染色体，DNA链未螺旋化，並以游離的形式存在於細胞質中，细胞质内也无任何有膜的细胞器（如粒線體或葉綠體）。有些分類學者将原核生物歸於原核生物域（Proka

H, Uematsu K, Tame A, Furukawa H, Maruyama T, Worman CO, Yokoyama K. Prokaryote or eukaryote? A unique microorganism from the deep sea.. J Electron Microsc

Taxonomy of the family Halobacteriaceae: a paradigm for changing concepts in prokaryote systematics. International Journal of Systematic and Evolutionary Microbiology

2014. ISBN 9787040396317.  Lane N. Energetics and genetics across the prokaryote-eukaryote divide. Biology Direct. 2011-06, 6 (1): 35. PMC 3152533 . PMID 21714941