ANTH 210 Lecture Notes - Lecture 18: Fructose-Bisphosphate Aldolase, Transfer Rna, Lysine
10 Aug 2018
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Document Summary
To create and re-create the building blocks. In isolated systems the degree of disorder only increases. Entropy (s) is a measure if the disorder within a system. A positive entropy change spontaneously favors a reaction. In biological system, this usually translates into release of heat to the sea surrounding the system. Cells and organisms use energy to live and grow. Catabolic pathways break down molecules of food. Release energy and heat into the environment. After water, most of the cell is made of macromolecules. Macromolecules synthesis is a type of organization by forming covalent bonds. Proteins and some rna have tertiary structures. Information coding is another type of organization. Sequence specificity is necessary thus you are not just randomly made. Most reactions in macromolecular synthesis are condensation reactions. Most anabolic pathways are no energetically favoured. Enzyme catalysis to speed up and control reactions. Coupling of unfavoured and favored chemical reactions.
