Cell Theory

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What is Cell Theory?

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Cell Theory is a fundamental concept in biology that states: 1) All living organisms are composed of one or more cells. 2) The cell is the basic unit of life. 3) All cells arise from pre-existing cells.

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Who was the first scientist to observe bacteria?

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Anton van Leeuwenhoek was the first scientist to observe bacteria using a microscope.

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What tool is used to view cells?

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A microscope is used to view cells.

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What does it mean that all cells come from pre-existing cells?

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It means that new cells are produced by the division of existing cells, not from non-living matter.

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What is a prokaryotic cell?

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A prokaryotic cell is a simple, single-celled organism that lacks a nucleus and membrane-bound organelles, such as bacteria.

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What is a eukaryotic cell?

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A eukaryotic cell is a complex cell that contains a nucleus and membrane-bound organelles, found in organisms like plants and animals.

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Who contributed to the development of Cell Theory?

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Robert Hooke, Anton van Leeuwenhoek, Theodor Schwann, Rudolf Virchow, and Matthias Schleiden all contributed to the development of Cell Theory.

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What is the significance of Robert Hooke's work?

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Robert Hooke is known for coining the term 'cell' after observing cork under a microscope.

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What is the main difference between prokaryotic and eukaryotic cells?

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The main difference is that prokaryotic cells do not have a nucleus, while eukaryotic cells do.

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What is the function of a microscope?

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A microscope magnifies small objects, allowing us to see cells and microorganisms that are not visible to the naked eye.