Learning objectives
Discuss the biological, morphological and ecological species concepts and the strengths and limits of each.
Describe the three-domain system (Archaea, Bacteria, Eukarya) and compare the two prokaryotic domains, which differ in membrane lipids, ribosomal RNA sequences and cell wall chemistry.
Classify eukaryotes into the hierarchy of kingdom, phylum, class, order, family, genus and species, and outline the distinguishing features of Protoctista, Fungi, Plantae and Animalia.
Classify viruses by the kind of nucleic acid in their core — DNA or RNA, single-stranded or double-stranded.
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