BIOL 123 Lecture Notes - Lecture 14: Genetically Modified Bacterium, Microbiological Culture, Gram-Negative Bacteria
Document Summary
Bacteria and archaea play important roles in earth"s carbon cycle. Methane si the major component of natural gas. Anaerobic archaea that convert co2, methyl groups or acetate to ch4 and release. Live in swampy wetlants , in dee sea habitats or digestive systems. Photosynthesis to make organic compounds used by other compounds for food. Heterotrophic microorganisms that break down dead organism and organic matter releasing minerals for uptake by living things. Lives in close association with one or more other organisms. Parasitism- if one benefits at the expense of the other. Example: biolumincsecnet bacteria often relationship bwith squid and other. Mutualistic partnerships between bacteria and eukaryotes marina animals. Pathogenic microbes exist together as the human miccrobiome. Human skin and digrestive and reproductive systems many types of microbes. Coevolved with human metabolism to provide tratis humans don"t have. Over 10-100 trillion microbes in human colon. The presence of the suspected pathogen must correlate with the occurance of symptoms.
