1. also known as archaebacteria; prokaryotic organisms with different structures than bacteria; believed to be the most primitive organisms, capable of inhabiting extreme environments morphology
2. the two-name system of naming living things used in classification
archaea
3. prokaryotic organisms including bacteria and cyanobacteria
reproductive isolation
4. a cell that has a membrane-bound nucleus and/or organelles as its major characteristic
binomial nomenclature
5. the form or appearance of an organism; the collection of physical characteristics and the structure which make up an organism; a basis for species definition
eubacteria
6. a cell whose nucleus is not bound by a membrane
prokaryote
7. the separation of populations of organisms by some type of barrier to produce variations of species; no reproduction or exchange of genes occurs between the separated groups; a basis for species definition
eukaryote