HMB202H1 Study Guide - Midterm Guide: Dermis, Gonorrhea, Quorum Sensing
Document Summary
Microscopic, unicellular organisms, archaea and eukaryotes are more related. Includes: bacteria, archaea, unicellular eukaryotes (algi, fungi, protists), viruses (non-living) nad archaea are prokaryotes all unicellular microbes. Importance of microogranisms: important for function of biosphere; they make the biosphere, the oldest form of life, large mass of living material on earth (5x1030 cells) Trench -> can tolerate high pressure: deinococcus radiodurans: worls" toughest bacterium withstand extremes cold, dehydration, vacuum conditions, acidic, radioactivite environments. Industry: medicine, nitrogen-fixing bacteria in plant roots, cellulose-degrading microbes in the herbivore"s rumen. Ex) grass has cellulose in cell wallsthat must be degraded in fermenting chambers. Humans cannot digust grass for this reason: regeneration of nutrients in soil (decomposition) and water. Resting brain activity and more intense activites or emotional states are changed after consumptions os yogurt. Future dietary or drug interventions that can improve brain activity change depression with yogurt. Food spoilage- negative for human health, financial burden for food industry: diseases in plants, animals, and humans.
