Classification of Microscopic Life

==Linnaeus (aka Carolus Linneus / Carl Von Linne)==
Categorized all things into three kingdoms: the inanimate into chemicals, and the living into plants and animals
: - Plants are capable of photosynthesis, are usually green, have a cell wall, have spores, and are NOT capable of independent movement.
:: - Organisms that would be placed into this category include bacteria because they have a cell wall, and fungi due to their cell wall and spores.
: - Animals are NOT capable of photosynthesis, do NOT have cell walls or spores, but are capable of independent movement.
:: - Protozoa would be classified as animals because they are capable of independent movement
==Whittaker (1969)==
: Categorized living organisms into two categories: prokaryotic and eukaryotic
:: - Prokaryotic (pro=before, karyote=nucleus) cells have ribosomes, but no membranous organelles such as a nucleus, mitochondria, chloroplast, endoplasmic reticulum (ER), or golgi bodies.
::: - Ex. Monera (Prokaryotae), all bacteria
Bacteria: most are absorptive heterotrophs
:: - Eukaryotic (eu=true, karyote=nucleus): have both membranous organelles and ribosomes
::: - Ex. Protista, Fungi, Plants, Animals
==Carl Woese (1978)==
: Categorized all living things into 3 domains using DNA and RNA
:: 1) Bacteria: prokaryotes that contain Murein in cell wall and have cell membranes bonded by ester linkages.
:: 2) Archaea: prokaryotes that do NOT contain Murein in cell wall and have ether linkages.
:: 3) Eukarya: cells with membranous organelles
:::: a: Protista: simple plants,animals or fungi
:::: b: Fungi: complex eukaryotes that have hyphae made of chitin
:::: c: Plants: complex eukaryotes with the ability to photosynthesize
:::: d: Animals: complex eukaryotes that eat things
== Non-living ==
Viruses