BIOL 2051 Chapter : Chapter 4 Archaea
Document Summary
Forgotten domain found in extreme areas and don"t have much impact on our life. Archaeons look like ___bacteria__; however, genetic analyses show them to be different. Archaeons look like ___bacteria_; however, genetic analyses show them to be different -they live in some of the most ________inhospitable__ places (for humans) on earth. Phylogeny -comparisons of __rrna____ gene sequences can establish phylogenetic trees (good gene to look at this to establish new organisms and/or comparison) Woese and fox began these studies in the 1970s -the first organisms termed archaeons were the ______methanogens___: a group of microbes capable of producing methane. Structure (generally speaking) -similar in size and shape to __bacteria____ Usually possess singular, ___circular_______ chromosome and lack a membrane-bound nucleus. Many dna replication enzymes of archaea ____look__ like those of eukarya. Plasma membrane structure is ____unique______ to this domain. Can vary greatly (n. equitans is~ 0. 4 m in diameter, thermoproteus sp. can be 100 m long!)
