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Unformatted text preview: B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 1 BIOENERGETICS BIOENERGETICS Chapter 4 B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 2 Textbook • Chapter 4 – Pages 71 to 78 B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 3 Bioenergetics Bioenergetics • The study of energy energy in living systems living systems (environments) and the organisms organisms (plants and animals) that utilize it. B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 4 Potential Energy Potential Energy • Energy Energy that matter occupies matter occupies because of it’s location, arrangement, or position location, arrangement, or position. • Energy Energy of position of position. • Examples: Examples: 1. 1. Water behind a dam Water behind a dam 2. 2. Chemical energy (gas) Chemical energy (gas) Kinetic Energy Kinetic Energy • Energy Energy in the process of doing work process of doing work. • Energy Energy of of motion motion . • Examples: Examples: 1. 1. Heat Heat 2. 2. Light energy Light energy SUN Figure 4.1 B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 9 Systems Matter under study Open • Ecosystem • Cell • Plant, Animal, etc Closed • Planet Earth Isolated System Thermos bottle B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 10 First Law of Thermodynamics First Law of Thermodynamics • Energy Energy cannot be created created or or destroyed destroyed , but only converted converted to other forms. • This means that the amount of energy in the universe universe is is constant constant . B I O L O G Y 1 2 2 3 30-Dec-09 Gardiner 11 Second Law of Second Law of Thermodynamics Thermodynamics • All energy transformations energy transformations are inefficient inefficient because every reaction...
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This note was uploaded on 04/18/2010 for the course BIOLOGY 1223 taught by Professor Gardiner/lajoie during the Fall '09 term at UWO.
- Fall '09