Cell Theory

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What is Cell Theory?

Back

Cell Theory states that: 1) All living things are made of cells, 2) Cells are the basic units of life, 3) All cells come from pre-existing cells.

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What are the basic units of life?

Back

Cells are the basic units of life.

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How small are viruses?

Back

Viruses are sub-microscopic.

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Who proposed that all animals are made of cells?

Back

Theodor Schwann proposed that all animals are made of cells.

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What did the combined observations of Hooke, Schleiden, Schwann, Virchow & Von Leeuwenhoek help form?

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They helped form Cell Theory.

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Which statement is NOT part of Cell Theory?

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Anything that moves is made of cells.

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What did Robert Hooke discover?

Back

Robert Hooke discovered cells by observing cork under a microscope.

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What is the significance of Matthias Schleiden's contribution to Cell Theory?

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Matthias Schleiden concluded that all plants are made of cells.

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What is the role of Rudolf Virchow in Cell Theory?

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Rudolf Virchow stated that all cells come from other cells.

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What is a cell wall?

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A cell wall is a rigid outer layer that provides support and protection to plant cells.