The Cell Theory

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What is the Cell Theory?

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The Cell Theory states that: 1. All living things are composed of cells. 2. The cell is the basic unit of life. 3. All cells come from preexisting cells.

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True or False: All living things are made of cells.

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True

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Which scientist proposed that all plant tissues are composed of cells?

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Matthias Schleiden.

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What is the basic unit of life?

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The cell.

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True or False: All cells contain a nucleus.

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False. Not all cells have a nucleus (e.g., prokaryotic cells).

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What aided in the development of the Cell Theory?

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The continued development of the microscope helped scientists to see smaller organisms and their cellular structures.

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List one characteristic of living things.

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Living things grow and develop.

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What do living things maintain to survive?

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Homeostasis.

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True or False: Living things can adapt over time.

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True.

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What is one function of cells?

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Cells convert energy.