Investigation 3: Microscopic Life
Essential Standard: I can describe the differences between living cells that are organisms, and living cells
that are part of organisms.
that are part of organisms.
Part 1: Dicovering CellsLearning Targets: •
• I can identify the cell as the basic unit of life. • I can discover that cells can function as part of an organism. The boxes and that you see in the elodea are cells. Cells are joined together to make up the leaf tissue. If you look closely, you can see, the cells chloroplasts moving throughout the cell. This movement is called cytoplasmic streaming. The chloroplasts are circling to get energy from sunlight.
Part 2: Paramecia |
Euglena - A Flagellate Protist (whip like hairs)Part 3: MicroworldsLearning Targets •
• I can explain that cells have the same needs and perform the same functions are more complex organisms. • I can compare the structures and behaviors of single celled and multi celled organisms. Characteristics of Protists |
Learning Targets:
• I can generate evidence to support the idea that single-celled paramecia are living organisms. • I can compare the structures and functions of elodea cells and a paramecia cell. Observations: Paramecia move in the environment and there is movement within the paramecia due to cytoplasmic streaming. Paramecia are not cells, but are an individual cell, that is also an organism. The Amoeba: Movement and Feeding
The Amoeba is an interesting Protist. It shape shifts by using its cytoplasm to create pseudopods (false feet). The pseudopods also help the Amoeba to capture it food by surrounding it and creating a capsule, or food vacuole, in its cell membrane.
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Download the file below to your desktop. You can read about the characteristics that Protists have in common, as well as specific characteristics to different kinds of protists.
HOME WORK: Answer questions 1 - 7 in a word document, email to: [email protected]
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