2. Explain why enzyme activity declines at (a)high temperature and (b) presence of heavy metal ions.
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2. Explain why enzyme activity declines at (a)high temperature and (b) presence of heavy metal ions.
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- In an enzymatic reaction: a. the enzyme leaves the reaction chemically unchanged. b. if the enzyme molecules approach maximal rate, and the substrate is continually increased, the rate of the reaction does not reach saturation. c. in the stomach, enzymes would have an optimal activity at a neutral pH. d. increasing temperature above the optimal value slows the reaction rate. e. the least important level of organization for an enzyme is its tertiary structure.Which of the following methods is not used by enzymes to increase the rate of reactions? a. covalent bonding with the substrate at their active site b. bringing reacting molecules into close prosimity c. orienting reactants into positions to favor transition states d. changing charges on reactants to hasten their reactivity e. increasing fit of enzyme and substrate that reduces the energy of activation5. a) Why would an enzyme that is effective with one reaction have no effect on another reaction?
- 3. What is the marker for the enzyme’s optimum condition?1. The concentration of substrate X is high. What happens to the rate of the enzyme-catalyzed reaction if the concentration of substrate X is reduced? Explain. 2. An enzyme has an optimum pH of 7.2. What is most likely to happen to the activity of the enzyme if the pH drops to 6.2? Explain1. What are the differences classification of enzymes? List 5 classification of enzymes and cite their functions.
- 1. Compare and contrast the activation free energy and the free energy change for an enzyme-catalyzed reaction.1. There are two major categories of enzyme, inhibition, name, and describe them.  1a. Reverse inhibition can be overcome to allow the enzyme to resume is Catley activities. Describe how reversible inhibition can occur and how it can be over come.1. Describe the two ways by which the activity of an enzyme can be inhibited.
- 1. Define optimum pH and temperature of an enzyme.2. How do changes in pH and temperature affect the native conformation of an enzyme?3. How does changes in enzymatic factors affect the native conformation of enzymes? What happens to the enzyme’s native conformation once it is denatured? What structural organization are destroyed by this process? Answer thoroughly.1. What is the significance of the effect of enzyme concentration to enzyme activity in relation to the medical aspect? a. A person with fever cannot eat well and may suffer from indigestion b. A person with hyperacidicity experience vomiting upon taking milk c. Abnormal level of diagnostic enzymes indicate damage in the body tissues d. Too much hydrogen peroxide in the body forms free radicals if not decomposed by peroxidase 2. What is the relation of the effect of temperature on enzyme activity to the medical field? a. To explain the cause why a feverish person cannot eat b. To explain why drinking carbonated leaves a fizzing sensation in our tongue c. To explain the cause why milk should not be taken by hyperacidic individual d. To explain why bubbles are formed when cleaning wounds with hydrogen peroxide 3. What reaction was involved in the determination of Vitamin C content of fruits? a. Oxidation…