BIOLOGY 2EE3 Study Guide - Comprehensive Final Exam Guide - Carbon Dioxide, Bacteria, Dna

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The linear distance is proportional to sequence similarity of the ssu rrna gene sequences from organisms corresponding to the endpoints. The only organisms that produce it are bacteria and archaea. Important because it contains biochemically rare element cobalt. Important for the formation of blood and the proper function of the brain and the nervous system. Human b-12-dependent enzymes are methylmalonic and homocysteine. Lack of b-12 causes the buildup of substrates of the enzymes that are dependent on b-12. He placed sterile nutrient broth in a swan-necked flask. The bacteria from the air would get stuck in the neck and not be able to enter. But if he tilted the flask and allowed it to come in contact with the bacteria from air, then microbes were seen. Koch"s postulates: organism must be present in all cases of the disease. Pure culture must cause same disease when inoculated into susceptible host. Same organism must be isolated from the inoculated disease host (animal)

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