PATH 3610 Chapter Notes - Chapter 6: Bactericide, Endothelium, Bloating
17 Dec 2017
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Major groups of organisms: prions, viruses, bacteria, fungi, and parasites. In order of increasing complexity (from simplest to most complex): prion, viruses, the intracellular bacteria, the mycoplasma, the bacteria, fungi, protozoa, metazoa, and arthropods. Viruses can be further classified as rna or dna viruses, on the basis f the type of nucleic acid in their genomes. Bacteria are further classified by shape: cocci, rods (bacilli), and spirochetes by their reaction on gram staining (gram-positive or gram-negative), and by their oxygen requirement for growth (aerobic or anaerobic) Fungi can be classified as either yeasts or molds, or as dimorphic. Both the protozoa and metazoa are further classified into genera and species. Infectivity: the ability of an organism to colonize tissues, whereas pathogenicity refers to the ability of an organism to colonize tissues, Pathogenicity: the ability of an organism to cause disease: pathogenic organisms can be classified as either low-grade or high-grade on the basis of their ability to cause disease o.
