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Biology - Chapter 5

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What is the cell theory? The understanding that all living things are composed of cells and that all cells come from preexisting cells.
What is the cell theory? The understanding that all living things are composed of cells and that all cells come from preexisting cells.
What three things does the cell theory state? 1. All living things are composed of cells. 2. Cells are the basic unit of structure and function in living things. 3. All cells come from preexisting cells.
What are the three basic structures of cells of animals, plants, and related organisms? The cell membrane (outer boundary of the cell) the nucleus (the control center) and the cytoplasm (material between the cell membrane) and nucleus.
What is a cell membrane? A cell structure that regulates the passage of materials between the cell and its environment; aids in the protection and support of the cell.
What is a cell wall? A cell structure that surrounds the cel membrane for protection and support in plants, algae, and some bacteria.
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