Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 43.4, Problem 1MI
Why does dehalogenation increase the likelihood that the carbon compound will be degraded?
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Discussion Questions
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Part A: The Effect of Temperature on Enzyme Activity
Graph the volume of oxygen produced against the temperature of the solution.
How is the oxygen production in 30 seconds related to the rate of the reaction?
At what temperature is the rate of reaction the highest? Lowest? Explain.
Why might the enzyme activity decrease at very high temperatures?
Why might a high fever be dangerous to humans?
What is the optimal temperature for enzymes in the human body?
Part B: The Effect of pH on Enzyme Activity
Graph the volume of oxygen produced against the pH of the solution.
At what pH is the rate of reaction the highest? Lowest? Explain.
Why does changing the pH affect the enzyme activity?
Research the enzyme catalase. What is its function in the human body?
What is the optimal pH for the following enzymes found in the human body? Explain. (catalase, lipase (in your stomach),…
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Discussion Questions:
Part One
Why were the plants kept in the dark prior to the experiment? Why is this important?
Why is it important to boil the leaf?
Explain why it was necessary to use boiling alcohol?
What is the purpose of the iodine?
Part Two
What was the purpose of keeping the leaf in the dark and then covering it with a cardboard cut-out?
What conclusions can you draw from this part of the lab?
Part Three
7. In this experiment what was the purpose of adding the soda lime?
8. Why was a sealed bag placed around each plant?
9. What happened in the control plants?
10. What was the result on photosynthesis?
Part Four
11. Why was a variegated leaf used in this experiment?
!2. What conclusions can you draw about starch production in a variegated leaf?
How did the color differences between the two bacterial species you used in this experiment help you determine if the streak plate method you performed was successful?
Chapter 43 Solutions
Prescott's Microbiology
Ch. 43.1 - MICRO INQUIRY What is the difference between...Ch. 43.1 - Prob. 1RIACh. 43.1 - Prob. 2RIACh. 43.1 - Prob. 3RIACh. 43.1 - Prob. 4RIACh. 43.1 - Why do you think workers who perform these tests...Ch. 43.2 - Prob. 1MICh. 43.2 - Prob. 2MICh. 43.2 - Prob. 3MICh. 43.2 - Explain how primary, secondary, and tertiary...
Ch. 43.2 - Prob. 1.2RIACh. 43.2 - Prob. 1.3RIACh. 43.2 - Prob. 1.4RIACh. 43.2 - Prob. 1.5RIACh. 43.2 - What minerals contribute to eutrophication?Ch. 43.2 - Prob. 2.1RIACh. 43.2 - Prob. 2.2RIACh. 43.2 - Prob. 2.3RIACh. 43.3 - Why must the membrane between the two chambers be...Ch. 43.3 - Prob. 1RIACh. 43.3 - Prob. 2RIACh. 43.3 - How might microbial fuel cells be involved in...Ch. 43.4 - Why does dehalogenation increase the likelihood...Ch. 43.4 - Prob. 1RIACh. 43.4 - Explain the two mechanisms of reductive...Ch. 43.4 - Prob. 3RIACh. 43.4 - What components are commonly added to microbes...Ch. 43.4 - Prob. 5RIACh. 43 - You wish to build a house in a rural community...Ch. 43 - Prob. 2CHICh. 43 - Biofilms are known to form on surfaces in drinking...
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