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Transcript
Name: __________________________________ Date: __________ Period: _____ TOC # _____
The Hierarchy of Life
A cell is the smallest functional unit that can perform all of life’s tasks. A living organism may
consist of a single cell or a huge number of cells. In multicellular organisms, cells are specialized and
depend on other cells to maintain life. The specialization and interdependence of cells contribute to
a characteristic hierarchy of life, with each level defined by its structure and function.
List the sequence of increasing organization of atoms in living organisms.
Example
1.
2.
3.
Plant Example
4.
5.
6.
7.
8.
Animal Example
After discussion, answer the following questions.
1. Cells are alive, but not all living cells are organisms. Explain how this is true.
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2. What is the basic unit of life? _______________________________________
Why do you think so? ___________________________________________________________________________
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3. What organelles are found in cells?
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4. What is the difference between a prokaryotic cell and a eukaryotic cell?
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5. How many organisms have prokaryotic cells? How many have eukaryotic cells?
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6. How are paramecium cells and sheep cells the same and how are they different?
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7. How do cells in animals such as mammals and other vertebrates get the resources they
need to survive?
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8. Some say all life is aquatic. Explain what they mean.
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