PPT-Enzyme-controlled reactions

The SSERC Team Effect of competitive and non competitive inhibitors on galactosidase Paul Beaumont Kate Andrews Margaret Louis b galactosidase b galactosidase Competitive inhibition. 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. • Be able to describe a the key properties of a metabolic pathway.. • Be able to describe the various modes of regulation of metabolic pathways as they are presented in this lecture.. • Be able to explain the key properties of coenzymes, and know the types of group carried by each coenzyme discussed in this lecture.. Learning Objectives. Learn how the rate of an enzyme controlled reaction is measured.. Learn how temperature affects the rate of an enzyme controlled reaction.. Learn how pH affects the rate of an enzyme controlled reaction.. Lecturer Dr. . Kamal. E. M. . Elkahlout. Assistant Prof. of . Biotechnology. 1. CHAPTER 1. Fundamentals of Enzymes. 2. Fundamentals of enzymes. Why enzymes?. Enzyme nomenclature. Enzyme . units. Sources of . Topic 2: . Enzyme. . Kinetics. What is an Enzyme?.  . Enzymes: .  are biological molecules (proteins) that act as . catalysts*.  and help complex reactions . take place. Basically, they . break a protein down into its amino . 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. Chemical Reactions. :. A . chemical reaction . is a process that changes one set of chemicals into another by rearranging chemical bonds. The elements you start with are . reactants. The elements you end with are . Enzyme & Substrate. An enzyme is a globular protein which acts as a biological catalyst by speeding up the rate of chemical reactions. . Enzymes are . NOT. changed or consumed by the reactions they catalyze and thus can be reused. . Christian Kendall and Galen Mack-Crane. Reactions. Mass-Action Kinetics. Michaelis and Menten (1913). . First Order. Time (years). [C] conc. by %mass. Second Order Unimolecular. Enzyme-Substrate Reactions. • Be able to describe the various modes of regulation of metabolic pathways as they are presented in this lecture.. • Be able to explain the key properties of coenzymes, and know the types of group carried by each coenzyme discussed in this lecture.. In order for chemical reactions to take place, . enzymes . must be present to help . speed up . the reaction.. Chemical bonds connect atoms. to make . molecules. .. Chemical . reactions. can do two things:. 1 In this exercise we will look at the catalytic behavior of enzymes. You will use Excel to answer the questions in the exercise section. At the end of this session, you must hand in answers to all 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 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 .