BIOL 1001 Chapter Notes - Chapter 1: Common Descent, Natural Selection, Bulgarian Lev
Document Summary
Principles underlying all science: all events can be attributed to natural causes, explanations don"t invoke deity, do not specifically exclude deity, science has to rely on the evidence they"re able to observe and manipulate here in the natural world, natural laws apply at all places and all times, we don"t rely on supernatural explanations, people perceive events in similar ways. Penicillin: fleming, 1920: microbiologist, worked with bacteria, culture dish became contaminated, bacteria wouldn"t grow near penicillium mold, extracted fluid from mold, fluid inhibited bacterial growth from growing around it, later isolated as penicillin, now used as antibiotics to fight off bacterial infections, came about by accident. What are the characteristics of living things: complex and organized, salt: organized but simple, oceans: complex but unorganized, water flea: organized and complex, materials and energy, must get them from the external environment in order to stay alive, homeostasis requires energy.
