BIOL 319 Lecture Notes - Lecture 2: Transferrin, Good Guys (American Company), Apoptosis
31 Jan 2017
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A bacteria and its associated disease (****for exam! Fecal-oral spread; controllable by public health measures. Veneral spread; difficult to contorl as social factors are involved. Vector (biting arthropod): malaria, sandfly fever, typhus (louse-borne) Vertebrate resevoir: brucellosis, rabies, q fever, lassa fever, salmoneliosis. Earth"s evolution: changed an anoxic environment to an oxic one with the presence of bacteria. Endosymbiotic theory: life on earth originated more than 3. 5 billion yrs ago, earliest organisms were small and simple but transformed their surroundings while evolving to survive. Earliest fossil evidence of cells appears in sedimentary rock that formed over 2 billion years ago. Living cell components may have formed from spontaneous reactions sparked by uv absorption or electrical discharge. Germ theory of disease: microorganisms (germs, a crummy term) can invade macro-organisms and cause disease. Biogenesis: the hypothesis that living organisms arise from preexisting life vs. Spontaneous generation: maggots, wrms, microorganisms arose from nonliving things.
