Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 43, Problem 4S
Summary Introduction
To determine:
The reason why Karen needs to drink more caffeinated beverages in order to get the same effect that she earlier used to get with lesser caffeinated beverages.
Introduction:
Habituation is the process when certain cells of the nervous system lose their ability to respond to a particular stimulus due to overexposing or prolonged usage of that stimulus. Some of the nerve cells are more prone to habituation than others.
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Write the assignment on the title "GYMNOSPERMS" focus on the explanation of its important families, characters and reproduction.
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Discussion Questions
Answer these discussion questions and submit them as part of your lab report.
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),…
Anwser these
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?
Chapter 43 Solutions
Biology
Ch. 43 - Which of the following best describes the...Ch. 43 - The ____ cannot be controlled by conscious...Ch. 43 - Prob. 3UCh. 43 - Inhibitory neurotransmitters a. hyperpolarize...Ch. 43 - White matter is ______, and gray matter is...Ch. 43 - During an action potential a. the rising phase is...Ch. 43 - Prob. 7UCh. 43 - Imagine that you are doing an experiment on the...Ch. 43 - The Na+/K+ ATPase pump is a. not required for...Ch. 43 - Prob. 3A
Ch. 43 - The following is a list of the components of a...Ch. 43 - Prob. 5ACh. 43 - As you sit quietly reading this sentence, the part...Ch. 43 - G proteincoupled receptors are involved in the...Ch. 43 - Tetraethylammonium (TEA) is a drug that blocks...Ch. 43 - Describe the status of the Na+ and K+ channels at...Ch. 43 - Describe the steps required to produce an...Ch. 43 - Prob. 4S
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