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Inside a Basic Cell
Age 12 · Biology
Most cells share a simple plan. A protective outer boundary surrounds jelly-like cytoplasm, and a nucleus holds the cell’s genetic instructions.
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In the picture
- Protective membrane: the outer boundary that encloses the cell.
- Cytoplasm: the jelly-like fluid filling the cell.
- Nucleus: the central rounded structure that holds genetic instructions.
- Genetic instructions: the twisted ladder inside the nucleus.
Examples
- An onion skin cell under a microscope has a boundary, fluid, and a nucleus.
- A human cheek cell has a membrane, cytoplasm, and a nucleus.
Key takeaways
- Most cells have a protective outer boundary, a jelly-like inside, and a nucleus.
- The nucleus stores instructions a cell needs to work and make more cells.
Quiz: Inside a Basic Cell (Age 12)
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Which part is the protective outer boundary that encloses a cell?
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What is the cytoplasm?
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What does the nucleus store?
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