You got it already. Modern cell theory is known as "cell theory" or "modern cell theory." Cell theory has been added to over the years, but its name doesn't change. If you take into account the recent additions, then you could call the current cell theory "modern cell theory" and the previous cell theory "classical cell theory." I want to be clear though, modern cell theory contains all of the information of classical cell theory.
Cell theory states the following:
- All life is made of at least one cell
- cells come from pre-existing cells
- a cell is the basic unit of life in all living things
- all cells contain genetic info (DNA) that is passed down from generation to generation
- All cells are basically the same in chemical composition and metabolic activities
- All basic chemical & physiological functions (movement, digestion, etc.) are carried out inside the cells
- Cell activity depends on the activities of sub-cellular structures (organelles, nucleus, plasma membrane) within the cell
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