Term
| How big does something have to be in order for us to see it? |
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Definition
| They have to be larger than 0.1 of a millimeter |
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Term
| What was Matthias Schleiden and Theodore Schwann's hypothesis? |
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Definition
| They made the hypothesis that all organisms are made of cells. They suggested that cells are the basic unit of life. |
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Term
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Definition
All living things are composed of one or more cells.
Cells are the basic units of structure and function in all organisms. |
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Term
| What are compound microscopes? |
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Definition
| A microscope using two lenses and a light source that magnifies the specimen up to 2000x |
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Term
| What are electron microscopes? |
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Definition
| Scientists use these. They use beams of electrons instead of light. They enlarge the thing up to 2 million times onto a screen or photographic plate. |
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Term
| What is a transmission microscope? |
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Definition
| It magnifies the a thin cross-section of the specimen |
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Term
| What is a scanning micropcope? |
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Definition
| It magnifies the whole specimen and produces a 3D image |
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