C D intermediate compound end product feedback inhibition Use the understanding

C d intermediate compound end product feedback

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C D) intermediate compound end product feedback inhibition Use the understanding you gained from doing the concept map to answer the questions. 1. Reduced organic compounds tend to contain stored energy in C—H bonds. As a general rule, the greater the number of C—H bonds, the greater the amount of potential energy stored in the molecule. Answer each question in the chart as it relates to the two reactions shown at the top. Be sure to explain the reasoning behind your answers. Reaction 1: CH 4 + 2 O 2 H 2 O + CO 2 (methane) Reaction 2: 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 a. Is the reaction exergonic or endergonic? Exergonic This reaction releases energy. Endergonic This reaction requires energy. b. Is the reaction spontaneous? Yes The end products are at lower energy levels than the reactants. No The end products are at higher energy levels than the reactants. c. Is the reaction anabolic or catabolic? Catabolic This reaction “breaks down” methane into water and carbon dioxide. Anabolic This is a synthetic reaction that “builds up” sugar from water and carbon dioxide. d. Is G (the change in free energy) positive or negative? Negative Free energy is released. Positive The reaction requires the input of free energy. 2. All metabolic reactions in living organisms are enzyme mediated. Each enzyme is specific for one (or only a very few similar types of) reaction. Given this, there are approximately as many different kinds of enzymes as there are reactions. a.What characteristics do all enzymes share?All enzymes contain a reactive site. All have a specific conformation that fits them to their substrate(s). All serve to reduce the activation energy of reactions.
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3. How can enzyme function be mediated or modified? To answer, complete a and b below. a.What factors can modify enzyme function? b.What effect(s) can each of these factors have on enzyme function?
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  • Spring '09
  • Hayes
  • Biology

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