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Cards In This Set
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What are the 4 characteristics of prokaryotic cells?
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1. Do not have a nuclear membrane
2. Do not have well developed organelles
3. Found only in the kingdoms monera and protista
4. Considered to be more primitive than any other cells
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3 characteristics of Eukaryotic cells?
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1. Contain a nuclear membrane
2. Have well developed organelles
3. Found in all other kindoms (Plant, animal, fungi, and protista)
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What kind of electron microscope studies the internal structures?
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Transmission Electron Microscope
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What is the cell theory?
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1. All living things have cells
2. Cells are the basic structure of all living things
3. ALl cells come from pre- existing cells
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English physician who discovered cells in 1665
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Robert Hooke
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Who developed the first compound microscope and viewed microscopic protozoans in pond water? Also named them "animalcules"
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Antoine van Leeuwenhoek
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Who proposed the cell thery in 1855?
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Rudolf Virchow
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1833: Discovered the nucleus of a cell?
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Robert Brown
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Function of a cell membrane
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Protects the cell as an individual unit and allows materials in and out
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Outside later of cells
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Cell membrane
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Developed in the 1940s- 1950s and allowed magnifications of 10, 000 to 100, 000x
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Electron microscopes
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2 lenses- an objective lens and an eyepiece
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Compound microscope
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How does a compound lens work?
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Objective lens magnifies the image first, and the eyepiece magnifies that image
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What kind of microscope has a single lens?
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Simple microscope
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Who invented the first compound microscope?
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The Jansen brothers
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