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Cell

Cell:  It is the smallest unit of life capable of performing all living functions.

Properties of cell

  • The Cell is the smallest living unit of life.

  • It is so small that it is not visible to the naked eye.

  • The shape of the cell varies in different organisms and within an organism.

  • Size of cells also differs.

  • All living cells exhibit certain basic properties like respiration, growth, metabolism etc.

  • Cells originate from a pre-existing cell. A mother cell divides to produce daughter cells. Hence, cells exhibit cell division.

Milestones in Cell Biology

Biologists

Major contributions

Robert Hooke

Discovered cell

Leeuwenhoek

Discovered microscope

Robert Brown

Nucleus

Purkinje          

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