BIO 203 Lecture Notes - Lecture 17: Myoglobin, Cellular Respiration, Hemocyanin
17 Dec 2016
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Lecture 17 and 18: respiratory systems and gas exchange. Best known for the boyle"s law, showed that both animals and flames died in a vacuum indicating that air contain something that is required both to maintain life and to keep a candle burning. Examined the ability of gases to support life. Mice survived when placed in gas produced by heating mercuric oxide. Mice lived longer if plant material is present in the container. Discovered that animals and burning coal consume o2 and releasing co2 and heat. Demonstrated that the amount of heat produced relative of o2 uptake is about the same for animals and burning coal. Major function of respiration is gas exchange: uptake of molecular o2 from environment, discharge of co2 into environment. Reservoirs of oxygen: atmosphere is a major reservoir 21% o2, bodies of water also contained dissolved o2, o2 is not very soluble in water.
