Biology 1002B Lecture Notes - Lecture 4: Gibbs Free Energy, Exergonic Reaction, Exergonic Process
15 Feb 2016
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Lecture 4: energy and enzymes anuj gupta 01/13/16 cells as open systems and how they maintain low entropy. Chlamy (as well as cells) are open systems (energy and matter are freely exchangeable with the environment). Energy can be used as work to move or build macromolecules. But not all e is used because some is lost as entropy or energy spreading. Entropy causes or will cause everything to breakdown. Cells maintain low entropy by always taking in energy and matter. The s of the environment around the cell drastically increase due to the cell constantly giving off waste and heat. You need to eat to maintain low entropy because the entropy is always causing stuff to breakdown (this process cannot be stopped). By constantly getting energy you can counteract this by keeping the entropy low: that is why transcription is always occurring or housekeeping genes are always on.
