This preview shows page 1. Sign up to view the full content.
Unformatted text preview: that forever increases in systems to which no energy is added. In each energy exchangefrom the first photosynthetic reaction to the last in the food web where carnivores dine on one anotherenergy escapes, primarily as heat. Although the heat energy remains in the system (fulfilling the First Law of conservation), the energy is no longer available to do work, hence it is lost to further metabolism. Each of the exchanges is exergonic (ex = out; energy out). The heat of the system rises in proportion to the loss of potential energy. To maintain the organized systems like organisms, therefore, energy is added constantly in a series of endergonic (end = in; energy in) processes....
View Full Document
This note was uploaded on 11/14/2011 for the course BIO 1421 taught by Professor Farr during the Fall '08 term at Texas State.
- Fall '08