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CH3041
CLASSIFICATION SYSTEMS
CLASSIFICATION OF MICROBES :
(1) phylum (kingdom) of microbe
Bacteria: most abundant 0.2 – 50mm,
  Actinomycetes: unicellular (30% of bugs in tropics)
Fungi: oxygenated areas, diverse range
Algae: contain chlorophyll photosynthesize
Protozoa: simplest animal, graze bacteria.
(2) carbon source to build cellular material.                       
(3) energy source power cellular metabolism                                        
(4) electron donor used in respiration.
(5) electron acceptor used in respiration.
Aerobes (use O2), obligate anaerobes (O2 is toxic), facultative anaerobes (prefer O2).
Sort of at the level of kingdom (bacteria, fungi, Protoctista (protozoa), microbiologists don’t use kingdom
phylogenetic tree of living things, based on RNA data and proposed by Carl Woese,
Separation of all organisms into 3 domains: bacteria (prok), archaea [(prok) eg thermophiles, halophiles] eukaryotes(algae, fungi).
Most algae are euk except blue-green algae which are prok (1/2 bacterial)
Actinomycetes – found in soil, Actinomycin-D is one of the older chemotherapy drugs which has been used in therapy for many years