BIO152H5 Lecture Notes - Lecture 2: Peptidoglycan, Chitin, Gene Expression
Document Summary
The properties of water are necessary to support life. The organization of living organisms is connected to evolution. Cohesion: water molecules are attracted to and bonded to each other. Adhesion: water molecules interact with the surface of various transport vessels. Explaining how water travels from a tree"s roots to its leaves. Surface tension: a measure of how difficult it is to break the surface of water. This depends on the strength of hydrogen bonds. High specific heat: temperatures are moderated on land if it is near water. Water has the ability to absorb heat from the sunlight, cooling off the land masses. In the winter, water also has the ability to release heat. Evaporation: the hottest molecules with the highest kinetic energy leave as a gas through evaporation. The transformation from liquid to gas is evaporation, breaking h-bonds before a vapour is formed. This then cools down organisms in terms of body temperature (ex.
