Sunday, 8 November 2009

What are the six parts to modern cell theory?

I wish
scientists would agree on how many parts exist to modern cell theory.  Depending on the textbook
or teacher, there are two general summaries of modern cell theory.  A 3 part model and a 6 part
model.  You asked for the 6 part model.  

  1. All living things are
    made of cells
  2. The cell is the simplest complete structural and functional
    unit of all living things
  3. All cells come from pre-existing cells (that
    means cells do not spontaneously generate themselves)
  4. Cells contain
    hereditary information (DNA), which is passed down from cell to cell during cellular
    reproduction (depending on the cell and cell type that could be binary fission or mitosis)
     
  5. All energy flow of life occurs within cells
  6. All
    cells are more or less made of the same chemical composition 

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