November 3, 2003 - Enzymes and their Activities

November 3, 2003 - Enzymes and their Activities - Enzymes...

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Enzymes and their Activities Activation energy – can be reached by adding energy or by using enzymes to lower the activation energy level required for a reaction Enzyme – a biological catalyst that changes the rate of a chemical reaction without being consumed by that reaction. Globular proteins and are exactly as the name sounds. Enzymes act upon a substrate. Protein as an Enzyme has a specific substrate upon it acts upon to create a specific product. Ex. You take sucrose and put it in contact with the enzyme sucrase, the products are Glucose + Fructose. Imoportant to understand that enzymes recognize their own specific substrate from all other substrates including isomers that have the same number and types of atomes, but in a different shape with different properties. Ex. Carbon Dioxide + Water and put them in the presence of the enzyme Carbonic Anhydrase and produce the product H2CO 3 H + + HCO3 - Most of the Cox transported around the human body is in the form of bicarbonate ions. Globular proteins have an active site with a cleft or a depression that has a specific shape
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November 3, 2003 - Enzymes and their Activities - Enzymes...

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