Cell Theory and Microscopes

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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 made up of cells, 2) The cell is the basic unit of life, and 3) All cells arise from pre-existing cells.

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Who was Robert Hooke?

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Robert Hooke was a scientist who first identified and named cells in 1665 after observing cork under a microscope.

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What did Anton van Leeuwenhoek discover?

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Anton van Leeuwenhoek discovered 'animalcules' (microorganisms) in pond water and dental scrapings using a microscope.

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What is the function of a microscope?

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A microscope is an instrument that magnifies small objects, allowing us to see details that are not visible to the naked eye.

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What are the main differences between plant and animal cells?

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Plant cells have a cell wall and chloroplasts, while animal cells do not. Animal cells have lysosomes, which are not found in plant cells.

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What is a cell membrane?

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The cell membrane is a protective barrier that surrounds the cell, controlling what enters and exits the cell.

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What is a cell wall?

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The cell wall is a rigid outer layer found in plant cells, providing structure and support.

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What are chloroplasts?

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Chloroplasts are organelles found in plant cells that conduct photosynthesis, converting sunlight into energy.

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What is the role of ribosomes?

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Ribosomes are the cellular structures responsible for protein synthesis.

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What is the significance of microscopes in biology?

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Microscopes allow scientists to observe cells and microorganisms, leading to discoveries in biology and medicine.