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The Cell Theory
Next Generation: MS.LS1.1 NGSS

The Cell Theory


This lesson will discuss the cell theory as it relates to all cells and will describe the basic characteristics of all cells.

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Terms to Know

​The smallest unit of life

Cell Theory

A theory that states all things are made of cells, cells are the smallest unit of life, and all cells come from preexisting cells


​The jelly-like substance found inside of a cell which holds all other organelles


The macromolecule that contains all of an organism's genetic information

Eukaryotic Cells

​The type of cell which holds all of its genetic information inside of a membrane bound nucleus

Prokaryotic Cells

​The type of cell which does not contain a nucleus

​Plasma Membrane

​The membrane which surrounds the outer body of the cell and controls what can enter and exit the cell