EDCI 2400 Chapter : Ch.1 Ppt
Document Summary
Range of conditions for life: cell/ body temperature from -2c to 132c, our typical temperature is 37 c, range of pressures: 1 atm to 1100 atm. Conditions at the average debt of the ocean: 2 c to 4 c, 380 atm of pressure, no sunlight. Most common habitat for life on the planet is the deep ocean. Anartic fishes: live and have body temps at -2 c (below the freezing temp of most vertebraes, they are ectotherm (body temp set by env. Penguins: keep warm at similar temperatures (endotherm- body temp is result of metabolism) Diving seals: hold their breath for as long as 90 minutes. 1500 m for as long as 90 min. Piezophiles: becateria piezophiles (=bareophiles) are pressure loving : thrive at pressures that kill surface bacteria. Thermophiles: bacteria- thermophiles that exist at temp up to 132 c (grow at 122 c) Sharks: live with molar urea in their tissues. Urea is a potent dis something of organisms.
