7.12F The Cell Theory

____ is credited with being the first scientist to observe cork cells.

• Leewenhoek

• Schleiden

• Schwann

• Hooke

An organism made of only one cell is called _____ .

• eukaryotic

• multicellular

• unicellular

• prokaryotic

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Which statement is a part of the cell theory?

• all cells come from preexisting cells

• bacteria are prokaryotic cells

• humans are multicellular

• eukaryotic cells are complex

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What tool do you use to view the cells?

• metric ruler

• microscope

• centrifuge

• pipette

Cell theory states that -

• cells are microscopic

• cells are cool

• cells are the basic building block of life

• cells cannot be destroyed

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This scientist concluded that animals are made of cells:

• Hooke

• Leeunwenhoek

• Schleiden

• Schwann

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This scientist proposed that all cells come from other cells:

• Hooke

• Virchow

• Schleiden

• Schwann

This scientist concluded that plants are made of cells:

• Hooke

• Virchow

• Schleiden

• Schwann

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A plant and an animal are both living things. According to the cell theory, what can you conclude about these two very different organisms?

• Plants have cells but animals do not.

• They both come from the same kind of cell.

• They are both made of one or more cells.

• They both come from a non-living organism.

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Leeuwenhoek discovered something very odd when he looked a the gunk on his teeth. What did he discover?

• cells

• cavities

• influenza

• bacteria

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