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 Cells are the basic unit of life.  Cells are classified as prokaryotes or eukaryotes Cells ProkaryoteEukaryote.

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Presentation on theme: " Cells are the basic unit of life.  Cells are classified as prokaryotes or eukaryotes Cells ProkaryoteEukaryote."— Presentation transcript:

1  Cells are the basic unit of life.  Cells are classified as prokaryotes or eukaryotes Cells ProkaryoteEukaryote

2  Oldest cells – probably the first life on earth  Very simple cells composed of 2 main parts ◦ Cell Membrane – the outer boundary of the cell ◦ Cytoplasm – jelly-like interior of the cell  The name prokaryote comes from the Greek pros meaning “before” and karyon meaning “nut”, referring to the nucleus  Most prokaryotes are single celled organisms  Example: bacteria

3  More advanced cells  Found in plants and animals  Eukaryotic cells are composed of 4 main parts: ◦ Cell Membrane – the outer boundary of the cell ◦ Cytoplasm – jelly-like interior of the cell ◦ Nucleus – the control center of the cell which contains the cell’s genetic material (DNA) ◦ Organelles – structures that carry out cell functions  Organisms can be single-celled or multicellular

4 Plant cell Examples: Single Celled – algae Multicellular - onion Animal cell Examples: Single Celled: Amoeba, Protozoan Multicellular: Human


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