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- All living organisms have one or more cells
- Cells are the smallest living units of all living organisms
- Cells arise only by division of a previously existing cell |
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| - Protects the cell by controlling what goes in and what comes out |
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| Gel like substances which holds the organelles together |
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| Packages and secretes waste |
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| Transport materials and sends messages |
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| Contains digestive enzymes |
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| Eukaryotic Cell (Animal Cell) |
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- Large
- Very Complex
- Contains a true nucleus to house the genetic material
- Linear DNA packaged into chromatin found in the nucleus
- Contains specialised structures
- Not all have a cell wall |
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| Prokaryotic Cells (Plant Cells) |
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- Much Smaller
- Less Complex
- No nuclear membrane
- Circular DNA found in the cytoplasm
- No organelles
- Surrounded by a cell wall |
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- Body is made by 200 different kinds of cells
- All cells come from stem cells
- Stem Cells are cells which are not specialises
- The process of specific specialisation and that is called differentiation
- Self-Renewing to make more cells
- Differentiate into a specialised cell type |
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- Often known as adult stem cells
- Also includes stem cells isolated from fetal and chord blood
- Very difficult to isolate
- Already used to treat patients |
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