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Name ___________KEY_______________________ Date___________________ Period _____________ CP Biology 2014-15Biochemistry Part 2 Animations – EnzymesDirections: View the following animations, take notes in the space provided, and answer the questions in each section.A. Enzyme animation (basic). Enzymes area.lipids.b.proteins.c.carbohydrates.d.nucleic acids.2. Which of the following binds to the active site of an enzyme?a.waterb.productc.substrated.none of the above3. Which of the following correctly represents the mechanism of enzyme function?A)S + P E-P E + PB)E + P E-S E-P E + PC)E + S E-S E-P E + PD)E + S E-P E-S E + S4. An enzyme can only bind one reactant at a time.A)TrueB)False5. An enzyme speeds up a chemical reaction in the cell, but can only be used once.A)TrueB)FalseB. Enzymes (a little more in detail). As with all proteins, the structure of an enzyme is what determines its function.2. Denaturation is a process by which an enzyme becomes less effective or not effective at all.3. Temperature and pH can affect the shape of proteins.4. “Why Enzymes?” Draw the steps of the simple synthesis reaction that occurs when an enzyme is present.5. “Denaturing”- Draw the shape of the functional enzyme and its substrates in the animation. Then, draw the shape of the denatured enzyme and its substrates.C. Activation Energy Animation. Draw a diagram of the graph of Potential Energy versus Time. Be sure to include the following terms on your diagram: Reactants, Activation energy, Transition State, Products357251013671700Transition State22917152387602. Define/ describe Catalyst: substance that speeds up a chemical reaction, but is not changed by the reactionActive Site: place on an enzyme where the substrate can reactSubstrate: reactant in an enzyme-catalyzed reactionLock and Key Model: The substrates fit the enzymes like a key fits into a lock.Induced fit Model: The enzyme binds the substrate(s) and slightly changes its shape to “hug” the substrate(s) tightly. (like a handshake) ................
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