Cell size limitations
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Cell Size Limitations. Why are cells so small?. Most cells are between 2 µm and 200µm A micrometer is 1 millionth of a meter! Too small to be seen with naked eye . Why can’t organisms be one big giant cell? . Limits . Diffusion limits cell size

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Cell size limitations

Cell Size Limitations

Why are cells so small?


Cell size limitations



Limits
Limits

  • Diffusion limits cell size

    • Movement from higher concentration to lower concentration

    • Larger the distance, slower the diffusion rate

    • A cell 20 cm would require months for nutrients to get to the center


Cell size limitations

  • DNA limits cell size

    • larger cells need more DNA. Needs more of everything

    • Most cells have just one nucleus



Cell size limitations


Cell size limitations


Why do cells divide
Why do cells divide? divide before they become too big

  • Replacement

  • Repair

  • Growth