1) Which organic compound provides living things with a long term source of energy? a) carbohydrates b) lipids c) protein 2) This macromolecule provides a quick source of energy: a) enzyme b) protein c) lipids d) carbohydrates 3) Enzymes are types of which organic compound? a) protein b) lipids c) carbohyrates 4) Enzymes speed up reactions. What term do we use for something that speeds up a reaction? a) reactant b) carbohydrate c) catalyst d) substrate 5) If an enzyme is over-heated it can become denatured. What does this mean? a) The enzyme has lost it's shape and no longer works. b) The enzyme works even faster now. c) The order of amino acids in the enzyme has changed. d) The enzyme has duplicated. 6) Which factors will affect the function of an enzyme? a) temperature and light b) pH and carbon dioxide level c) temperature and pH d) oxygen level and water content 7) The diagram shows an enzyme-substrate complex. Which is true about this diagram? a) 1 is the enzyme and 3 is the substrate b) 2 is the enzyme and 4 is the substrate c) 1 and 3 are both enzymes. d) 1 is the substrate and 3 is the enzyme 8) Lipase is an enzyme that breaks down triglycerides into glycerides and... a) fatty acids b) amino acids c) monosaccharides 9) Starch, cellulose, and monosaccharides are all examples of... a) proteins b) carbohydrates c) lipids 10) Protease is an enzyme that breaks the bonds of amino acids in a polypeptide chain. Protease breaks down... a) proteins b) carbohydrates c) lipids 11) Amylase, lipase, and lactase are all able to break down polymers. These are all examples of... a) carbohydrates b) lipids c) proteins 12) Cellulose is made up of sugars and forms the cell wall providing plant cells with structure and support. Cellulose is a... a) protein b) lipid c) carbohydrate 13) Pumps and channels within the cell membrane that help transport materials are composed of... a) lipids b) proteins c) carbohydrates

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