Catalysts speed up the rate of the reaction

Catalysts §speed up the rate of the reaction. §lowers the energy input required for a chemical reaction to happen §remains unchanged at the end of the reaction skool

Enzymes § Enzymes are Biological catalysts §Enzymes control chemical reactions that take place in the cytoplasm. §http: //programs. northlandcollege. edu/biology/Biology 1111/animations/enz yme. html §Catalase in an example of an enzyme made by living cells

Catalase § The enzyme catalase breaks down the waste substance hydrogen peroxide into water and oxygen. Hydrogen peroxide (substrate) catalase (enzyme) oxygen +water (products)

Degradation reactions animation

Synthesis Reaction es Active site

Degradation reactions Starch Maltose

Enzyme activity Temperature and p. H affect the activity of an enzyme.

Optimum Condition Enzymes function best or are most active in specific conditions known as optimum conditions.

Degradation reaction Substrate Enzyme Product Memory Hydrogen peroxide Starch Catalase Oxygen and water Amylase Maltose HPCOW Maltose Maltase Glucose Protein Pepsin Peptides Protease Amino acids Fats Lipase Fatty Acids and Glycerol

Synthesis reaction Glucose-1 phosphate Starch

Properties of enzymes Speed up reactions. Made of protein. Are specific. Not used up during the reaction. Require optimum conditions at which they work best. At high temperature they become denatured

Lock and Key l http: //www. lewport. wnyric. org/jwanamaker/ animations/Enzyme%20 activity. html

Synthesis reactions phosphorylase Glucose-1 -phosphate Starch (Substrate) (enzyme) (product)

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