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Unformatted text preview: 5-10 um in size Spherical cylindrical or oval in shape Most common y east used in industry is saccharomyces cerevisiae o Under aerobic conditions used as a bakers`yeast o Under anaerobic conditions used for alcohol production Protozoa Unicellular motile relative large 1-50um eukaryotes that: o Lack cell wall They cause a number of human diseases eg malaria But many of them have beneficial roles eg digestion Removing bacteria from waste water What are viruses?? Nucleic acid genome: o Dna and rna Protein coat o Protection, entry into the cell o LIPID ENVELOPE IN SOME VIRUSES o SMALL o 10-400nm o Obligate intracellular parasites o Not considered as life...
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