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AP A Unit 5 Lesson 1
AP A Unit 5 Lesson 1 Key Terms
| Question | Answer |
|---|---|
| cytoplasm | the contents of the cell bounded by the plasma membrane; in eukaryotes, the portion exclusive of the nucleus |
| cytosol | the semifluid portion of the cytoplasm |
| electron microscope | a microscope that uses magnets to focus an electron beam on or through a specimen, resulting in a practical resolution that is 100-fold greater than that of a light microscope using standard techniques, see SEM vs TEM |
| eukaryotic cell | A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles. Organisms with eukaryotic cells are called Eukaryotes. |
| light microscope | an optical instrument with lenses that refract (bend) visible light to magnify images of specimens |
| nucleoid | a non-membrane-enclosed region in a prokaryotic cell where its chromosome is located |
| organelles | The vaious functional components present in cells. |
| plasma membrane | the membrane at the boundary of every cell that acts as a selective barrier, regulating the cell’s chemical composition |
| prokaryotic cell | A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles |
| scanning electron microscope | a microscope that uses an electron beam to scan the surface of a sample, coated with metal atoms, to study details of its topography |
| transmission electron microscope | a microscope that passes an electron beam through very thin sections stained with metal atoms and is primarily used to study the internal structure of cells |
Created by:
Jason Stanwood