Chapter 5

Chapter 5 - C hapter 5 Cells have their own metabolisms...

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Chapter 5 Cells have their own metabolisms (sum of all chemical RXNS) Catabolism break down of molecules, usually occurs by hydrolysis and releases energy. Anabolism formation of large molecule from small molecule, takes place by dehydration synthesis and requires energy. Energy ability to do work or cause changes; physical or chemical. Potential Energy Stored energy Kinetic Energy Energy that is in use Autotrophs—plants (make their own energy, ex. Photosynthesis) Photoautotrophs or phototrophs Chemoautotrophs Heterotrophs—fungi and animals (have to obtain energy, cannot make it) Chemohetrotrophs or chemotrophs Energy is lost in each step as a heat from one cycle to another. Energy only moves in one direction. SUN Autotrophs Heterotrophs. Every time there is a energy conversion energy is lost. Matter is cycled but energy is not. Thermodynamics study of energy transformation. It is a closed system. Open system cannot be studied. We cannot live in a closed system.
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Oxidation loss of electrons Reduction gain of electrons Living organisms take in energy to order structures. Units of energy
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This note was uploaded on 11/17/2010 for the course BIO 205 taught by Professor G during the Spring '10 term at WPUNJ.

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Chapter 5 - C hapter 5 Cells have their own metabolisms...

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