
Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 13.4, Problem 4CYU
What are tears and what structure secretes them?
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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 13 Solutions
Anatomy & Physiology (6th Edition)
Ch. 13.1 - What are the three levels of sensory integration?Ch. 13.1 - Prob. 2CYUCh. 13.1 - Your cortex decodes incoming action potentials...Ch. 13.2 - Your PNS mostly consists of nerves. What else...Ch. 13.2 - Youve cut your finger on a broken beaker in your...Ch. 13.4 - What are tears and what structure secretes them?Ch. 13.4 - Prob. 5CYUCh. 13.4 - Arrange the following in the order that light...Ch. 13.4 - You have been reading this book text for a while...Ch. 13.4 - Prob. 8CYU
Ch. 13.4 - For each of the following, indicate whether it...Ch. 13.4 - Which part of the visual field would be affected...Ch. 13.4 - Prob. 13CYUCh. 13.4 - Name the five taste modalities. Name the three...Ch. 13.5 - Apart from the bony boundaries, which structure...Ch. 13.5 - Which structure inside the spiral organ allows us...Ch. 13.5 - Prob. 17CYUCh. 13.5 - If the brain stem did not receive input from both...Ch. 13.5 - Prob. 19CYUCh. 13.6 - Prob. 20CYUCh. 13.6 - What is in a nerve besides axons?Ch. 13.6 - Wills femoral nerve was crushed while clinicians...Ch. 13.7 - Name the cranial nerve(s) most involved in each of...Ch. 13.8 - Prob. 24CYUCh. 13.8 - After his horse-riding accident, the actor...Ch. 13.9 - What are varicosities and where would you find...Ch. 13.10 - Which parts of the nervous system ultimately plan...Ch. 13.11 - Prob. 28CYUCh. 13.11 - Prob. 29CYUCh. 13.11 - Prob. 30CYUCh. 13.11 - Prob. 31CYUCh. 13 - The large onion-shaped receptors that are found...Ch. 13 - Proprioceptors include all of the following except...Ch. 13 - Prob. 3MCCh. 13 - Prob. 5MCCh. 13 - For each of the following muscles or body regions,...Ch. 13 - Prob. 33MCCh. 13 - Prob. 4MCCh. 13 - Match the names of the cranial nerves in column B...Ch. 13 - Prob. 8MCCh. 13 - The portion of the fibrous layer that is white and...Ch. 13 - Which sequence best describes a normal route for...Ch. 13 - Prob. 11MCCh. 13 - Damage to the medial recti muscles would probably...Ch. 13 - The phenomenon of dark adaptation is best...Ch. 13 - Blockage of the scleral venous sinus might result...Ch. 13 - Nearsightedness is more properly called a. myopia,...Ch. 13 - Of the neurons in the retina, the axons of which...Ch. 13 - Which reactions occur when a person looks at a...Ch. 13 - The blind spot of the eye is a. where more rods...Ch. 13 - Olfactory tract damage would probably affect your...Ch. 13 - Sensory impulses transmitted over the facial,...Ch. 13 - Taste buds are found on the a. anterior part of...Ch. 13 - Gustatory epithelial cells are stimulated by a....Ch. 13 - Olfactory nerve filaments are found a. in the...Ch. 13 - Conduction of sound from the middle ear to the...Ch. 13 - Which of the following statements does not...Ch. 13 - Pitch is to frequency of sound as loudness is to...Ch. 13 - The structure that allows pressure in the middle...Ch. 13 - Which of the following is important in maintaining...Ch. 13 - Equilibrium receptors that report the position of...Ch. 13 - Which of the following is not a possible cause of...Ch. 13 - Which of the following are intrinsic eye muscles?...Ch. 13 - Prob. 32MCCh. 13 - List the structural components of the peripheral...Ch. 13 - Prob. 47SAQCh. 13 - Central pattern generators (CPGs) are found at the...Ch. 13 - Prob. 48SAQCh. 13 - Explain how a crossed-extensor reflex exemplifies...Ch. 13 - What clinical information can be gained by...Ch. 13 - Prob. 46SAQCh. 13 - How do rods and cones differ functionally?Ch. 13 - Where is the fovea centralis, and why is it...Ch. 13 - Prob. 37SAQCh. 13 - Since there are only three types of cones, how can...Ch. 13 - Where are the olfactory sensory neurons, and why...Ch. 13 - (a) Define plexus. (b) Indicate the spinal roots...Ch. 13 - What is the homeostatic value of flexor reflexes?Ch. 13 - Prob. 43SAQCh. 13 - Prob. 1CCSCh. 13 - Prob. 2CCSCh. 13 - Prob. 3CCSCh. 13 - Prob. 1CCSSCh. 13 - Prob. 2CCSSCh. 13 - Prob. 3CCSSCh. 13 - Prob. 4CCSSCh. 13 - Prob. 5CCSS
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