
EP HUMAN ANAT.+PHYS.LAB.MAN...-ACCESS
13th Edition
ISBN: 9780134779942
Author: Marieb
Publisher: PEARSON CO
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Chapter 3, Problem 1RQ
Summary Introduction
To determine:
The smallest unit which is capable of life independently.
Expert Solution & Answer

Answer to Problem 1RQ
Solution:
(d) The cell
Explanation of Solution
The cell is considered to be the smallest structural, functional, and biological unit of living organisms. It is also known as the building block of life. The human body consists of millions of cells. These supple the structures of the body. The cell takes up nutrients from the food and converts them into energy. The energy is used to perform many functions of the body. The cell also consists of body’s hereditary material.
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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),…
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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 3 Solutions
EP HUMAN ANAT.+PHYS.LAB.MAN...-ACCESS
Ch. 3 - Prob. 1RQCh. 3 - 2. The major types of lipid found in the plasma...Ch. 3 - 3. Membrane junctions that allow nutrients or ions...Ch. 3 - Prob. 4RQCh. 3 - A physiologist observes that the concentration of...Ch. 3 - 8. The endocytotic process in which a sampling of...Ch. 3 - Prob. 6RQCh. 3 - 11. The information sequence that determines the...Ch. 3 - 13. The phase of mitosis during which centrioles...Ch. 3 - 15. The RNA synthesized on one of the DNA strands...
Ch. 3 - 16. The RNA species that travels from the nucleus...Ch. 3 - 17. If DNA has a sequence of AAA, then a segment...Ch. 3 - 18. A nerve cell and a lymphocyte are presumed to...Ch. 3 - 19. A pancreas cell makes proteins (enzymes) that...Ch. 3 - 21. Contrast the roles of ER-bound ribosomes with...Ch. 3 - Prob. 11RQCh. 3 - 24. Comment on the role of the sodium-potassium...Ch. 3 - 25. Differentiate between primary and secondary...Ch. 3 - 26. Cell division typically yields two daughter...Ch. 3 - 2. A “red-hot” bacterial infection of the...Ch. 3 - 3. Two examples of chemotherapeutic drugs (drugs...Ch. 3 - 5. In their anatomy lab, many students are exposed...Ch. 3 - 6. Dynein is missing from the cilia and flagella...Ch. 3 - 7. Explain why alcoholics are likely to have much...Ch. 3 - 8. Fresh water is a precious natural resource in...
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