Cell theory & Scientists

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What is the cell theory?

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The cell theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells arise from preexisting cells.

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Who is known for coining the term 'cell' after observing cork under a microscope?

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Robert Hooke.

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What did Anton van Leeuwenhoek contribute to cell biology?

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Anton van Leeuwenhoek is known for his work in microscopy and for being the first to observe and describe single-celled organisms, which he called 'animalcules'.

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What is the significance of Rudolf Virchow's contribution to cell theory?

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Rudolf Virchow proposed that all cells come from preexisting cells, which is a fundamental principle of the cell theory.

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Which type of microscope can magnify objects up to 1,000,000 times?

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Electron microscope.

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What are the three main components of the cell theory?

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1. All living organisms are composed of cells. 2. The cell is the basic unit of life. 3. All cells arise from preexisting cells.

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Who were the main contributors to the development of the cell theory?

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Robert Hooke, Anton van Leeuwenhoek, Theodor Schwann, Rudolf Virchow, and Matthias Schleiden.

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What is the role of Theodor Schwann in cell theory?

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Theodor Schwann proposed that all animals are made of cells, contributing to the formulation of the cell theory.

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What is the difference between prokaryotic and eukaryotic cells?

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Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and membrane-bound organelles.

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What is the function of the cell membrane?

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The cell membrane regulates what enters and exits the cell, providing protection and structural support.