PPT-Enzymes Learning Objectives:

1 Describe enzyme nomenclature 2Explain the Classification of enzymes 3Study the mechanizem action of enzymes 4illusterate factors affecting enzyme activity Enzyme nomenclature Two Systems . Definition of an enzyme. Enzyme. is . protein . . catalyst. (i.e. . increase the rate of reactions. ). . NOT. changed during the reaction. Chapter 2: Section 2.5. 1. Objectives. SWBAT explain the effect of a catalyst on activation energy. . SWBAT describe how enzymes regulate chemical reactions. . and maintain homeostasis.. 2. Starter: How can this be possible. Enzymes as Catalysts. Enzymes are used to speed up chemical (metabolic) reactions e.g. respiration or photosynthesis- so why use enzymes in industry?. They are specific. can catalyse reactions between specific chemicals, even in a large mixture . Warm up. Grab warm up and complete. We will be putting this into your . journal. When you are done with your warm up look over your Vocab 1-1, you have a . quiz today. Biomolecule review. Cellulose, a structural component of the cell wall of plants and some forms of algae, is mainly used to produce paper and cardboard products. Cellulose would be an example of which type of biomolecule. Academic . Biology. Enzyme. A large protein molecule. Specific shape with deep folds on its surface. Deep folds form pockets called active site. Enzyme-Substrate. The shape of the . enzyme. . active site . Are specific for . what they . catalyze . and do not permanently change during reactions. End in the word -. ase. Function of Enzymes. Enzymes work by lowering the activation energy (the amount of energy needed to start a reaction). . E S <=> ES <=> ES* <=> EP <=> E P. Michaelis-Menten Kinetics. E S <=> ES <=> ES* <=> EP <=> E P. Rate of Formation. Substrate. Product. Enzyme. Enzyme-. IMPORTANCE. OF ENZYMES. Enzymes are biological catalysts that:. . I. ncrease. . reaction rates . by lowering the amount of energy needed for the reaction to occur. 100-1000x . faster. !!!. Activation Energy. Part 1. . Chapter 3. Learning outcomes. You should be able to:. explain how enzymes work. describe and explain the factors that affect. enzyme activity. use V. max. and K. m. to compare the affinity of different enzymes for their substrates. Food biochemistry and food processing. 2012. Simpson B.K. (Ed.) 2. nd. . edition,. John Wiley & Sons, . Inc.. Enzymes in food processing. Advantages.. Enzymes are proteins with powerful catalytic . Restriction enzymes. Polymerase enzyme. Strand-displacing polymerases. Helicase enzymes. Discovery and Obtainability:. Most enzymes are proteins discovered in cells.. But . DNAzymes. were . descovered. Enzymes. Back when we discussed proteins, we learned that one critical function of protein was to speed up chemical reactions.. Enzymes. are the proteins that increase the rate of chemical reactions. To the penny placed on your desk.. Observe the penny but don’t touch it. What happens?. Explain why. 2. Give the penny a . little . push. What happened?. Why did the penny move the second time and not the first time?. Regulation of enzymes Introduction andProperties of Enzymes Enzymes are characteristics to facilitate the Enzyme-catalyzed reactions take place Reactants need to pass over the energy barrier, Catalys