Biology 3601A/B Lecture Notes - Lecture 17: Freezing Rain, Ice Crystals, Supercooling
4 Jan 2019
School
Department
Course
Professor
Document Summary
If you are an ectotherm (e. g. insects) living in this environment, then most of the year is spend preparing for winter: for a lot of the year, they spend 8-10 months to prepare for winter. Only small portion of the year for growth and development. Insects are mostly ectotherms: because they are ectotherms, body temperature remains fairly similar to the environment. Water freezing means it is less dense because it is floating on the surface. Salt water has lower freezing point due to the solutes: this adding of solutes is an important physical and chemical property. Pure water melts at 0 degreesc, however the temperature at which it freezes depends on whether it can form a crystalline (ice) Can"t transport the fluid across the body because it is a crystal. Oxygen doesn"t diffuse through ice from a biological perspective. Expansion of water in a finite area leads to damage. How to stay supercooled: stay supercooled to prevent freezing, small size.
