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2-1 Ubiquity of Microorganisms

2-1 Ubiquity of Microorganisms - Experiment 2-1 Ubiquity of...

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1 Experiment 2-1: Ubiquity of Microorganisms(pgs 27-29), 2-2 and 2-4 (pgs 30-37;39): Cultural Characteristics Purpose : To demonstrate the wide distribution of bacteria. Also, to show the importance of aseptic technique (so pure, uncontaminated cultures can be obtained). Classification The five kingdom system The three domains of life refer to figure 3-10 on page 73 Domain Archaea Domain Bacteria Domain Eucarya All: prokaryotic Prokaryotic All: have nuclei Divisions: Seldom photosynthetic Group 1: The methanogens Anaerobes, 70S ribosomes, The extreme halophiles No golgi, NoMt The hyperthermophiles Group 2: Aerobes, 80S ribosomes, Golgi, Mt, Chloroplasts King Animalia Characteristics of Bacteria : Organisms that are the most widely distributed, the simplest in morphology, the smallest in size, the most difficult to classify, the hardest to identify 1. Ubiquitous – found all over and in every environment such as soil, water, on plants, on animals, or humans 2. Simple morphology (shape) Three major bacterial morphologies:
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