BIOL208 Lecture Notes - Lecture 9: Water Potential, Tonicity, Osmotic Pressure
2 Feb 2018
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Bio 208 lecture 9 friday, january 26, 2018. Wi = wd ws (plus or minus) wo: wi = internal water, wd = water gain through drinking, ws = water loss through secretion, wo = water loss/gain through osmosis. Takeaway: relative humidity, vapor pressure deficit, and water vapor pressure, larger value of relative humidity in warm than cold because of how much moisture the air can hold. Isosmotic, hyperosmotic, hypoosmotic: water potential, water budgets and what they mean, how plants, terrestrial animals, and marine animals deal with limited water. Organisms obtain energy from one of three sources: from the sun by solar radiation, organic molecules. Inorganic molecules: like hydrogen sulfide, like highly specialized bacteria, creatures in deep ocean trenches. Trophy: trophic/trophy/trop: having to do with eating, autotrophy: use inorganic sources of carbon and energy, heterotrophy: use organic sources of carbon and energy, consume carbon.
