Chapter13part4

Chapter13part4 - Eukaryotic cell structure Prokaryotic cell...

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Prokaryotic cell structure Eukaryotic cell structure These fundamental differences in cell structure form the basis for the selective activity of antibiotics (e.g. cell wall and protein synthesis). Prokaryotes evolve rapidly (generation times range from minutes to days). They can develop resistance to antiobiotics and rapidly transfer this resistance to other cells. Blue-green “algae” have a prokaryotic cell structure and should be called cyanobacteria.
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The 6 Kingdom classification scheme is derived primarily from phenotypic characteristics of organisms. A classification scheme based on genotypic characteristics (sequencing of rRNA) defines 3 Domains of life. This scheme provides more information about evolutionary decent. Formerly the Kingdom Monera in the 5 Kingdom scheme The first classification schemes were based primarily on the phenotypic characteristics of organisms. These phenotypic characteristics are what you used to classify organisms in the lab.
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Three Domains of life - a universal phlogenetic tree as determined from comparative rRNA sequencing. The location highlighted in red is the hypothesized root of the tree, which represents the position of the universal ancestor of all cells. Two of the three Domains contain only prokaryotes.
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Chapter13part4 - Eukaryotic cell structure Prokaryotic cell...

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