cell theory
نص القصة المصورة
- Good Morning!! I am Mr. Hamrick I am the substitute for Mrs. Cahill
- Cell Theory
- We are going to be learning the three parts of the Cell Theory
- 1. All organisms are made up of one or more cells. To be a living being, you are either a cell or made up of cells.
- 2. The cell is the basic unit of organization in organisms. This means that any part of the cell cannot be called living. Only the whole cell can be called living.
- Cell Theory
- 3. All cells come from preexisting cells, which means new cells come from the division of other, existing cells
- Some of you have asked how the Cell Theory came about.
- In 1665, Robert Hooke used a microscope on a piece of cork and found empty little boxes and named them cells.
- In the 1830's, Matthias Schleiden used a microscope to to study plants and decided they were made up of cells. Theodor Schwann did the same with animals and found animials are made of cells as well.
- Years later, Rudolf Virchow stated that cells divide into new cells. And along with Hooke, Schleiden, and Schwann's conclusions, made up the cell theory.
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