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Ch. 7.1 - The Discovery of Cells
Ch. 7.1 - The Discovery of Cells
8
Biology
10th Grade
01/04/2012

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Term
cell
Definition
the basic units of living organisms; all organisms are made up of these
Term
compound light microscope
Definition
uses visible light and a series of lenses to magnify objects in steps; can magnify objects roughly 1500 times their original size
Term
cell theory
Definition

one of the fundamental ideas of modern biology;

states all organisms are made of cells; the cell is the basic unit of organization of an organism; all cells come from preexisting cells

Term
electron microscope
Definition
an instrument that uses a beam of electrons instead of natural light to magnify structures up to approximately 500,000 times their actual size
Term
prokaryote
Definition
primitive cells; these cells do not have membrane-bound organelles
Term
eukaryote
Definition
this type of cell contains membrane bound organelles
Term
organelle
Definition
the membrane-bound structures inside a eukaryotic cell
Term
nucleus
Definition
the central membrane-bound organelle that manages cellular functions
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