Cell: The Unit of Life

1. A.
   Robert Brown discovered the cell.
2. B.
   Schleiden and Schwann formulated the cell theory.
3. C.
   Virchow explained that cells are formed from pre-existing cells.
4. D.
   A unicellular organism carries out its life activities within a single cell.

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1. A.
   bacterial fermentation
2. B.
   regeneration of old cells
3. C.
   pre-existing cells
4. D.
   abiotic materials

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1. A.
   Cells of all living organisms have a nucleus.
2. B.
   Both animal and plant cells have a well defined cell wall.
3. C.
   In prokaryotes, there are no membrane bound organelles.
4. D.
   Cells are formed de novo from abiotic materials.

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