BIOL 1110 Lecture Notes - Lecture 13: Painted Turtle, Homeostasis, Hemoglobin
Document Summary
Ecologically: h2o in liquid form has h bonds that break at about 500 billion/sec. Upon freezing, h bonds become more stable and lock into a hexagonal shape crystals. Crystals allow ice to float on top of h2o. In aquatic systems, sinking ice would crush and kill all living organisms within the body of h2o. They perforate cell walls and membranes, so when they melt they kill the cell. No energy is used to freeze but a lot is used to warm back up. H2o requires more heat than most liquids to warm and loses heat slowly. Climate weather conditions of an area over the long term (50 years) Gulf of mexico stream brings up warm h2o from florida. Moves heat from core to surface through circulatory system. In humans we observe sweat at the skin surface. Evaporation of sweat carries heat away via evaporation.
