THE CELL THEORY 1. All living things are composed of cells.

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Presentation transcript:

THE CELL THEORY 1. All living things are composed of cells. 2. Cells are the basic unit of structure & function in living things. 3. New cells are produced by existing cells.

Cells are the basic unit of life. Cells come in all different shapes & sizes. All living things are made up of cells!

Structures common to most cells 1. cell membrane 2. DNA 3. cytoplasm

T.E.M. 15,000X

Basic Types of Cells Prokaryotic cells: contain no nucleus or other membrane-bound organelles Simpler Most unicellular cells Eukaryotic: contain a membrane-bound nucleus and membrane-bound organelles More complex Most multicellular cells

Cellular Parts Nucleus: a distinct central organelle that contains the cell’s genetic material in the form of DNA. Organelle: specialized structures that carry out specific cell functions.

Cellular Parts

Basic Types of Cells

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