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Brief descriptions of microorganisms

Brief descriptions of microorganisms - .,...

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Brief descriptions of microorganisms. Bacteria are relatively simple, prokaryotic organisms whose  cells lack a nucleus or nuclear membrane. The bacteria may appear as rods (bacilli), spheres  (cocci), or spirals (spirilla or spirochetes). Bacteria reproduce by binary fission, have unique  constituents in their cell walls, and exist in most environments on earth. For instance, they live at  temperatures ranging from 0 °  to 100 ° C and in conditions that are oxygen rich or oxygen free. A  microscope is necessary to see and study them.  Fungi are eukaryotic microorganisms that include multicellular molds and unicellular (single-celled)  yeasts. The yeasts are slightly larger than bacteria and are used in alcoholic fermentations and  bread making. Certain yeasts such as  Candida albicans  are pathogenic (disease causing). Molds  are filamentous, branched fungi that use spores for reproduction. The fungi prefer acidic 
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  • Fall '07
  • PESTHY
  • Bacteria, marine food chains., nonmotile. Protozoa exist, unicellular organisms. Motion, pseudopodia. Certain species, algae capture sunlight, membranous envelope. Viruses

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