Life is Cellular
Cells are the most basic units of life. They make up all living things, whether they are bacteria, flowers, or whales. It wasn't until the invention of the microscope that cells were even discovered. Since the discovery of cells, all of the data and evidence that has ever been collected on cells has lead to the development of the cell theory.
What is the Cell Theory?
The cell theory was developed from the combined works of Matthias Shleiden, Theodor Schwann, and Rudolf Virchow. The cell theory contains three key points:
How are cells different?
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Animal Cells
Eukaryotic cells can be divided into two categories, animal cells and plant cells. While both plant and animal cells are eukaryotes, meaning that they share many similar features, there are some distinct differences between the two types that we will begin to learn about here. We are going to start by learning about animal cells.