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Enzymes Chemical Reactions Macromolecules Macro II Lab Bag 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Enzymes- 100 TRUE or FALSE: Enzymes are used up in the chemical reaction that they catalyze. FALSE Enzymes initiate chemical reactions, but they are not reactants. Back to the Game! Enzymes - 200 What is the location on an enzyme where the substrate attaches and a chemical bond is either broken or formed? active site Back to the Game! Enzymes - 300 Enzymes work by lowering the ________________ or the amount of energy required to start a chemical reaction. activation energy Back to the Game! Enzymes - 400 What is the name of the enzyme found in the liver of animals that breaks down toxic hydrogen peroxide into nontoxic products? catalase Back to the Game! Enzymes - 500 Once a substrate binds to the active site of an enzyme, the active site changes shape and forms this. enzyme-substrate complex Back to the Game! Chemical Reactions - 100 A _______ speeds up or slows down a chemical reaction without being changed or used up in the reaction. catalyst Back to the Game! Chemical Reactions - 200 What are the reactants in this chemical equation? N2 + O2 2NO N2 + O2 Back to the Game! Chemical Reactions - 300 What kind of reaction is pictured? Products Reactants endothermic reaction or energy-absorbing reaction Back to the Game! Chemical Reactions - 400 List three ways to speed up a chemical reaction. 1. add a catalyst 2. increase the temperature 3. increase the concentration of the reactants 4. favorably change the pH Back to the Game! Chemical Reactions - 500 What is released when a chemical bond is broken? energy Back to the Game! Macromolecules - 100 What two types of lipids provide insulation, provide buoyancy, and can serve as long term energy storage molecules? fats and oils Back to the Game! Macromolecules - 200 What group of lipids includes cholesterol, a molecule that transports fats throughout the body? steroids Back to the Game! Macromolecules - 300 List three functions of proteins. Proteins provide structure, allow movement, fight disease, transport substances, permit cell communication, speed up chemical reactions, and regulate cell growth. Back to the Game! Macromolecules - 400 Is this fatty acid, saturated, unsaturated, or polyunsaturated? saturated Back to the Game! Macromolecules - 500 Carbohydrates, proteins, and nucleic acids are polymers. List their monomers. Carbohydrates monosaccharides Proteins amino acids Nucleic acids nucleotides Back to the Game! Macro II - 100 This group of molecules stores genetic information in molecules like DNA and RNA. nucleic acids Back to the Game! Macro II - 200 What is the general formula for a carbohydrate? (CH2O)n Back to the Game! Macro II - 300 Adrenaline and testosterone are examples of this type of steroid. hormone Back to the Game! Macro II - 400 Carbon can form up to four __________ bonds with other atoms, making it ideal for building a wide variety of molecules. covalent Back to the Game! Macro II - 500 Plants can store energy in a polysaccharide called _________ which we tested for in our recent laboratory using iodine solution. starch Back to the Game! Lab Bag - 100 Benedict’s solution is a light blue solution. When heated in the presence of monosaccharides or disaccharides (sugars), it turns to this color. red - orange Back to the Game! Lab Bag - 200 Given the following test results, which substance contains starches? Food Food A Food B Food C Iodine test Yellow-brown (no change) Greenish -yellow Blue- black Benedict’s test Light blue changed to red Light blue changed to orange. Light blue (no change) Test Food C Back to the Game! Lab Bag - 300 What should the student’s conclusion be for the data below? The more enzyme added to a chemical reaction, the faster it will proceed. Back to the Game! Lab Bag - 500 In the enzyme testing laboratory, you were to determine the rate or speed of the reaction. How did you do this? by measuring the rate or speed at which oxygen gas was produced. Back to the Game! Daily Double! Daily Double Question In the enzyme laboratory, you investigated a particular chemical reaction. What is the balanced chemical equation for this reaction? Daily Double Answer 2H2O2 2H2O + O2 Back to the Game!