BIOL 102 Lecture Notes - Lecture 20: Lyme Disease, Purple Bacteria, Gc-Content
Document Summary
Cyanobacteria: uses chlorophyll a (releases oxygen, like eukaryotic photosynthesis) Nitrogen fixing bacteria: n2 to nh3 which is usable to other organism. Molecules are very important in classification and phylogenetics of prokaryotes. Rrna genes are present in all organisms. Facultative: an organism can do one thing in a situation and another in a different situation. Includes parasites: syphilis pathogen, lyme disease pathogen: chlamydias. Gram negative cocci with complex life cycles. Human infection: std: high gc gram positive bacteria. Streptomyces species produce many antibiotics: cyanobacteria. Free living or colonial: low-gc gram positive bacteria. Produces highly environmentally resistant endospores, to survive harsh environments. Can survive for 1000s of years or longer. Includes bacillus anthracis, clostridium botulinum, staphylococcus, streptococcus. Mycoplasma ( smallest know cellular organism: proteobacteria. Known for extreme environments, some are in less extreme. Some have different lipid membrane other than the ones of bacterias, and eukaryotes. Sulfolobus liv in hot sulfur spring: euryarchaeota.
