Name: ___________________________ Pd: ____ Date: ________
Essay: How does a vertebrate organism maintain homeostasis?
Part 1 of your systems test is what you complete in class. This essay functions as Part 2
of your systems test. Therefore, you will want to do the best on it that you can. It is
worth 30 points. You may refer to your notes as you write. Please follow these essaywriting guidelines:
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12 font
Times New Roman
Double space
1” margins
Title
Proper punctuation, grammar, and capitalization
Rough draft due Wed, Nov. 28
Final draft due Monday, Dec. 3
Paragraph 1: Introduction
 Introductory sentence that relates to the reader and captures the reader’s
attention
 Identify what is homeostasis
 Identify the things an organism has to do to maintain homeostasis (only the
needs that have to do with the organ systems we discussed in class!)
 Thesis statement – In one sentence answer the prompt question. This should
summarize your essay.
Paragraph 2: Describe homeostasis
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Topic sentence
Define homeostasis and describe what an organism in homeostasis is like
Give two examples of when an organism would not be in homeostasis
Describe what happens when an organism is not in homeostasis
Closing sentence/transition
Paragraph 3: Describe how a vertebrate organism maintains homeostasis
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Topic sentence
Relate what the organ systems have to do with homeostasis
Identify the organ systems we studied
Identify the function of each system
Closing sentence/transition
Paragraph 4: Examples of how the organ systems work together
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Topic sentence
Explain how the organ systems work together
Give at least three detailed examples
Explain why it is impossible to talk about each organ individually
Closing sentence/transition
Paragraph 5: Conclusion
 Topic sentence relating to your thesis statement and to the essay as a whole
 Summary of your essay in no less than three sentences
 Conclusion