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, and 3) All cells arise from pre-existing cells.

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Who is known for the term 'cell' in biology?

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Robert Hooke is credited with coining the term 'cell' after observing cork under a microscope and likening the structures he saw to the small rooms monks lived in.

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What did Matthias Schleiden contribute to Cell Theory?

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Matthias Schleiden concluded that all plants are made of cells, which was a significant contribution to the development of Cell Theory.

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What did Theodor Schwann discover about animal cells?

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Theodor Schwann discovered that all animals are also made of cells, further supporting the Cell Theory.

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What is the significance of Rudolf Virchow's statement 'Omnis cellula e cellula'?

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Rudolf Virchow's statement means 'All cells come from cells,' emphasizing that new cells arise only from existing cells.

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What did Anton van Leeuwenhoek observe?

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Anton van Leeuwenhoek was the first to observe and describe single-celled organisms, which he called 'animalcules'.

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What is the difference between prokaryotic and eukaryotic cells?

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Prokaryotic cells do not have a nucleus or membrane-bound organelles, while eukaryotic cells do.

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What are the main components of a cell?

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The main components of a cell include the cell membrane, cytoplasm, nucleus, and organelles.

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What role does the cell membrane play?

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The cell membrane controls what enters and exits the cell, providing protection and structure.

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What is the function of the nucleus in a cell?

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The nucleus acts as the control center of the cell, housing the cell's DNA and coordinating activities like growth and reproduction.