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Questions 1. (a) What is a substrate? What is an active site? How are they related? (b) Why is an enzyme considered a biological catalyst? KU 2. Describe the induced-fit hypothesis of an enzyme-

Questions 1. (a) What is a substrate? What is an active site? How are they related? (b) Why is an enzyme considered a biological catalyst? KU 2. Describe the induced-fit hypothesis of an enzyme-

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Help me to do Q1,2,3,5,6,8,9,11
Questions 1. (a) What is a substrate? What is an active site? How are they related? (b) Why is an enzyme considered a biological catalyst? K 2. Describe the induced-fit hypothesis of an enzyme- substrate interaction. K 3. What is the functional role of a coenzyme or a cofactor in an enzyme-induced reaction? Give an example of an enzyme that requires a cofactor or a coenzyme. K/U 4. Vitamins and their derivatives are important for enzymatic activity and cell metabolism. Research the effects of the absence or overconsumption of one water-soluble vitamin in a diet. Prepare a short report. 5. How does the rate of a reaction change as a result of each of the following factors? Support your answer with a graphic representation of the enzymatic rates. I (a) enzyme concentration (b) substrate concentration (c) temperature (d) pH 6. Describe noncompetitive enzyme inhibition. Provide an example to support your answer. 7. Malonate is a competitive inhibitor of an enzyme called succinate dehydrogenase. Research this interaction and describe how malonate prevents the enzyme from acting on its substrate, succinate. K/U 8. Describe the different effects of an activator and an inhibitor on an allosterically regulated enzyme. U 9. Describe how feedback inhibition reduces the waste of cellular resources. KUTA 10. Why is itfimportant for the human body to maintain a proper temperature and a proper pH at all times? 11. You are making a gelatin dessert, but the directions tell you not to use fresh pineapple because the gelatin will not solidify. Gelatin is a structural protein made from collagen. Pineapple contains an enzyme, bromelain, which is a protease. T (a) What effect does a protease have on a protein like collagen? (b) Could you use cooked or canned pineapple instead? Explain your answer. 12. Humans produce enzymes in the mouth, stomach, and small intestine that aid in the process of digestion. As we age, we tend to produce less of these enzymes. What effect could this have on digestion and nutrition? 13. Digestion cannot take place unless water is present. Explain this statement. T WEB LINK
Transcribed Image Text:Questions 1. (a) What is a substrate? What is an active site? How are they related? (b) Why is an enzyme considered a biological catalyst? K 2. Describe the induced-fit hypothesis of an enzyme- substrate interaction. K 3. What is the functional role of a coenzyme or a cofactor in an enzyme-induced reaction? Give an example of an enzyme that requires a cofactor or a coenzyme. K/U 4. Vitamins and their derivatives are important for enzymatic activity and cell metabolism. Research the effects of the absence or overconsumption of one water-soluble vitamin in a diet. Prepare a short report. 5. How does the rate of a reaction change as a result of each of the following factors? Support your answer with a graphic representation of the enzymatic rates. I (a) enzyme concentration (b) substrate concentration (c) temperature (d) pH 6. Describe noncompetitive enzyme inhibition. Provide an example to support your answer. 7. Malonate is a competitive inhibitor of an enzyme called succinate dehydrogenase. Research this interaction and describe how malonate prevents the enzyme from acting on its substrate, succinate. K/U 8. Describe the different effects of an activator and an inhibitor on an allosterically regulated enzyme. U 9. Describe how feedback inhibition reduces the waste of cellular resources. KUTA 10. Why is itfimportant for the human body to maintain a proper temperature and a proper pH at all times? 11. You are making a gelatin dessert, but the directions tell you not to use fresh pineapple because the gelatin will not solidify. Gelatin is a structural protein made from collagen. Pineapple contains an enzyme, bromelain, which is a protease. T (a) What effect does a protease have on a protein like collagen? (b) Could you use cooked or canned pineapple instead? Explain your answer. 12. Humans produce enzymes in the mouth, stomach, and small intestine that aid in the process of digestion. As we age, we tend to produce less of these enzymes. What effect could this have on digestion and nutrition? 13. Digestion cannot take place unless water is present. Explain this statement. T WEB LINK
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