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Human cell


The structure of a human cell includes the following parts: 

    • Cell membrane
      A fragile membrane that surrounds the cell and controls what passes in and out 

    • Nucleus
      Contains the cell’s DNA and nucleolus, which produces ribosomes 

    • Cytoplasm
      A fluid that contains organelles and where most chemical reactions and protein production take place 

  • Organelles
    Specialized parts of the cell that perform specific functions, such as mitochondria, ribosomes, Golgi bodies, and lysosomes 

  • Cell inclusions
    Small non-living structures within the cytoplasm, such as melanin, glycogen, and enzymes 

The average human body cell is between 20–30 micrometers in size.
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