PPT-Lesson 2.4: Chemical Reactions & Enzymes

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 . 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. 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. Enzymes speed up chemical reactions.. Everything that happens in a cell. Growth. Reproduction. Interaction with the environment. Response to stimuli. Is the result of a chemical reaction.. A chemical reaction is a change in the arrangement. 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. 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. protein. !. Enzymes are . Biological . catalysts . that . increase. . the rate of metabolic reactions.. Since enzymes speed up chemical reaction rates, what are they called?. Catalyst- . A substance . Chemical Reactions. A . chemical reaction . is a process that changes, or transforms, one set of chemicals into another by changing the chemical bonds that join atoms in compounds. . @Mass and energy are conserved during chemical transformations.@. THINK ABOUT IT . Living things are made up of chemical compounds, but chemistry isn’t just what life is made . of—chemistry is also what life does. . . Everything that happens in an organism. —its growth, its interaction with the environment, its reproduction, and even its movement. 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. . You would have to eat. your body weight if you needed to completely regenerate the ATP for your body. BUT. Enzymes. Chemical Reactions are represented by chemical equations. During chemical reactions, valence electrons of atoms or compounds are rearranged to form a new substance with new properties.. 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:. 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 that . catalyze. (. i.e.. , . increase or decrease the rates. of) . chemical reactions. .. . In enzymatic reactions, the . molecules. at the beginning of the process are called . substrates. , and they are converted into different molecules, called the . 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 .