why cell is fundamental unit of life

Smallest unit of life

  • A cell is the smallest structure that can perform all life processes like:
    • Respiration (breathing at cellular level)
    • Digestion
    • Growth

      All living organisms are made of cells

      • Every living thing is made up of cells:
        • Unicellular organisms only one cell (e.g., Amoeba)
        • Multicellular organisms many cells (e.g., humans, plants)

      This means cells are the building blocks of life.

      Cells perform all vital functions

      • All life activities happen inside cells, such as:
        • Energy production
        • Removal of waste
        • Making new cells

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