Sept9Enzymes - Enzymes Are biological catalysts that...

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Enzymes Enzymes are specific - Contrary to inorganic catalysts such as acids, bases, metals, etc enzymes are very specific. In other words each enzyme acts on a particular compound . Are biological catalysts that increase rate of chemical reactions Most are proteins Act by lowering energy required for a reaction to proceed
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In enzymatic reactions, the molecules at the beginning of the process are called substrates Enzymes convert substrates into different molecules, called the products. Almost all processes in a cell need enzymes to occur at significant rates. Since enzymes are selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell. Enzymes Reactions and cells
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Reaction pathway © 2007 Paul Billiet ODWS Enzymes act by lowering the free energy of the transition state Each reaction has a transition state where the substrate is in an unstable, short-lived chemical/structural state.
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Substrates fit into active sites Enzyme-substrate complex formed Reaction occurs Products dissociate Enzyme is unaltered Mechanism of Enzyme Action
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Sept9Enzymes - Enzymes Are biological catalysts that...

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