PPT-Enzymes Biochemical reactions require the participation of biological catalysts (biocatalysts),

enzymes The substance converted by an enzyme is called a substrate and a substance resulting from the conversion of the substrate is called the product The enzyme is not consumed during the reaction catalyzed by it so one enzyme molecule is involved in the conversion of many substrate molecules . of. . Reactions. – Part 2. Factors. . affecting. . the. rate . of. . reaction. The . surface. . area. The . concentration. . of. . the. . reactant. The . temperature. . at. . which. . the. Apoenzymes. , . Holoenzyme. , . Abzymes. , . Synzyme. , . Ribozyme. , . Extremozyme. , Historical Development in . Enzymology. , . Characteristics of enzymes, Enzyme Vs Chemical Catalysts. , Enzyme mechanism & Activation Energy, Enzyme Specificity, Fischer and . 2. The Michaelis-Menten equation describes the initial reaction velocity as a function of substrate concentration.. When v. o. = ½ V. max. , K. M. =[S]. Thus, K. M. is the substrate concentration that yields. Baseline (Flightpath D): To be able to define the terms ‘catalyst’ and ‘enzyme. ’.. Further (Flightpath C&B ): To be able to describe the properties of enzymes. To use the lock and key theory and collision theory to explain enzyme action. CATALYSTS AND ENZYMES. What are catalysts?. Simply put, catalysts are substances which, when added to a reaction, increase the rate of reaction by providing an alternate reaction pathway with a lower activation energy (Ea).. 2.2 Biochemical Reactions. What Are Chemical Reactions?. Process that changes some chemical substances to others. Reactant. – substance that starts chemical reaction. Product. – substance that forms as result of chemical reaction. 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). . 2008, Prentice Hall. Chemistry: A Molecular Approach. , 1. st. Ed.. Nivaldo Tro. Roy Kennedy. Massachusetts Bay Community College. Wellesley Hills, MA. Tro, Chemistry: A Molecular Approach. 2. Catalysts. 1. What are enzymes?. Each enzyme has only one specific reaction it can perform. . 2. How many different reactions can a single enzyme perform?. Yes, the same enzyme molecule can be used over and over. 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. 2.2 Biochemical Reactions. Learning Objectives for section 2.2:. Describe chemical reactions. State the role of energy in chemical reactions. Explain the importance of enzymes to living organisms.. The element chlorine is a greenish poison. . 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. 83 Lesson 3: Enzyme Regulation of Biochemical Reactions What is a biological catalyst? This super - fast train can obviously reach great speeds. And there's a lot of technology that helps this train On the surface of an enzyme, a small region called an active site binds a substrate and catalyzes a specific reaction for that substrate.. Learning . Goal . Describe enzymes and their role in enzyme-catalyzed reactions..