BIOL 1201 : BIOL1201 Test 1 Notes Siebenaller
Document Summary
The use of evidence to construct testable explanations and predications of natural phenomena. Science originates in questions about the natural world. Science uses observations and evidence to construct explanations about phenomena and testable hypothesis. The more observations and other kinds of evidence that support an hypothesis, the stronger is that hypothesis. The upper temp for life is 132 degrees. Cell/body temp from -2 c to 132 c. Most common habitat for life on the planet is the deep sea. Live (and have body temps) at -2c (below the freezing temp of most vertebrates body fluids) Hold their breath from as long as 90 min. High pressures, cold temps, low food availability. Bacteria - piezophiles (barophiles) are pressure loving . Thrive at pressures that kill surface bacteria. Bacteria - thermophiles exist at temps up to 132c (grow at 122c) Live with molar urea in their tissues. Urea is a potent denaturant of proteins.
