SC.912.L.14.1. Why do scientists believe that all living things are made of cells?

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Presentation transcript:

SC.912.L.14.1

Why do scientists believe that all living things are made of cells?

1665 Robert Hooke 1674 Anton van Leeuwenhoek 1838 Schleiden 1839 Schwann 1855 Virchow While these scientists were working they shared their ideas with others. Other scientists were able to perform experiments that confirmed their conclusions.

Used a simple microscope Saw little chambers in a piece of cork and called them cells.

Created over 500 microscopes Described seeing animalcules

Concluded that all plants and animals were made of cells.

Concluded that new cells could be produced only from the division of existing cells.

The cell theory states: 1. All living things are composed of cells. 2. Cells are the basic units of structure and function in living things. 3. New cells are produced from existing cells.

Why do you think the concept of cells was not studied before Hooke?

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