AP BIO UNIT 3 MCQ STUDY GUIDE WITH
COMPLETE SOLUTIONS 100%
Which of the following statements best helps explain how the lead ion causes inhibition of ALAD? - correct answer It changes the 3-D structure of the active site so that ALAD is no longer compatible with substrate.Which of the following statements correctly explains the observed effect of the acetylcholine concentration on the rate of the enzyme catalyzed reaction? - correct answer The active site of AChE is specific for acetylcholine, and only one substrate molecule can occupy the active site at a time.Based on the model, which of the following statements best explains an enzymes specificity for a particular substrate molecule? - correct answer A molecule with negative charges interacts with positively charged side chains in the enzymes active site.Which of the following best describes the contents expected to be contained in one of the five control test tubes? - correct answer PH 4 buffer solution and hydrogen peroxide only.Which test tubes are controls in the experiment? - correct answer Test tubes 1,3,5,7 Which of the following statements best helps justify the inclusion of group 2 as one of the controls in the experiment? - correct answer It will show whether the changes observed in group one depend on the metabolic activity of soil bacteria.Which of the following statements best helps justify the inclusion of test tube 5 in the experiment? - correct answer It will act as a control for test tube 6 by showing the effect of the presence or absence of the enzyme.Based on the results of the experiment, which of the following statements best predicts the effect of urea on the enzymes function? - correct answer Function will be disrupted by adding the urea and regained by removing the urea.Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the arrow in figure 1? - correct answer The amount of product will increase until the reaction reaches equilibrium point or until the substrate is used up by the reaction.
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