BIOL 4376 Lecture Notes - Lecture 13: Chromosome, Teichoic Acid, Bovine Spongiform Encephalopathy
2 Jul 2020
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Document Summary
In 1900, the primary cause of death in the usa was due to infectious diseases. In 2010, the primary cause of death was from cancer/heart disease. This is because people are surviving infectious diseases and living long enough to develop cancer/heart disease. Prokaryotes have one chromosome, no membrane-bound organelles, 70s ribosome, and cell wall with peptidoglycan. Types of fungi yeasts (cryptococcus, candida), dimorphic (histoplasma), molds (aspergillus) 3 bacteria shapes cocci (round), bacillus (oblong), spirochetes (squiggly) Gram stain process fixation, crystal violet, iodine, ethanol, safranin. Plasmids dna outside chromosome, transmitted by conjugation. Fibriae = pili facilitates adherence to surface. Endospores are highly resistant, dormant structures, formed when nutrients or environment are poor. Amphibionts mutualists that may become pathogenic sometimes. Translation is the conversion of mrna to a protein mrna read in ribosomes. There was a question about the microbiome; the microbiome can change and vary. Transient microbiota bacteria that colonize for a period of time.
