BIS 2B Lecture Notes - Lecture 5: Avocado, Cannibalism, Stoma

• School: UC-Davis
• Department: Biological Sciences
• Course: BIS 2B
• Professor: Mark Schwartz; Sharon Strauss

Document Summary

Shape of an en yme depends on its temp. En ymes have optimal temperatures in which they work most efficiently. )e maintain our body temperature so that our en ymes can work efficiently to cataly e metabolic reactions. As humans, our en ymes are optimi ed at 37 . Losing water is often a way to lose heat among many different organisms. Sweating- sweat evaporates off our skin and cools us down. The adaptations that reduce heat also increase evaporate water loss. In other words, our trade-off: maintaining body temperature but must find more water to prevent dehydration. Plants sweat just as humans do, through a process known as transpiration (cid:840)evaporation of water through stomata(cid:841)- keeps leaves from overheating. So, these stomata are not only important for the gas exchange of co but also with water. Adaptations that reduce water and/or heat stress in plants. Traits that decrease water loss or heat load- shoots .