BIOL 1201 : Bio Exam 1
Document Summary
Cell/body temps from -2 degrees to 132 degrees (celcius: average body temp is 37 degrees c. Range of pressures: 1 atm to 1100 atm. Conditions at the average depth of the ocean: 2-4 degrees celcius, 380 atm of pressure, no sunlight. Antartic fishes: live (and have body temps) at -2 degrees c (below the freezing temp of most vertebrates body fluids): ectotherm. Penguins: keep warm at similar temperatures: endotherm. Diving seals: hold their breath for as long as 90 minutes. Deep sea fishes: down to 8,000 m, high pressure, cold temps, low food availability. Piezophiles: bacteria, name means pressure loving , thrive at pressures that kill surface bacteria. Thermophiles: bacteria, exist at temps up to 132 degrees c (grow at 122 degrees c) Sharks: live with molar urea in their tissues, urea is a potent denaturant of proteins, halophilic bacteria live in osmotic equilibrium with 3 molar salt. Tuna: raise the temp of their muscles above ambient (as much as.
