Characteristics of Life Notes from PowerPoint
Cell Theory Timeline Notes
Francesco Redi:
In 1668 he published a book disproving or refuting the idea of spontaneous generation. Redi set up an experiment where he put meat in two jars. One jar was left uncovered and the other jar had a cloth top.
Robert Hooke:
In 1663 he discovered cells in a piece of cork. Other things that Robert Hooke looked at under a microscope are insects, sponges, bryozoans, foraminifera, and bird feathers.
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Anton Van Leeuwenhoek:
In 1683 he was the first person to look at living organisms found in pond water. He called this organisms animalcules or “little animals.” He also discovered bacteria, protists, sperm cells, and blood cells.
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Mathias Schleiden:
In 1838 he concluded that all plants are made of cells. The dark or “opaque
spots” that he noticed are now called nuclei. He also figured out that cells are
broken up in regular intervals.
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Theodor Schwann:
In 1839 he discovered that all animals are made up of cells. Using Schleiden’s
discover the year before he concluded that all living things are made
up of cells.
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Together Schwann and Schleiden are known for discovering all living things are made up of cells.
Rudolf Virchow:
In 1855 he figured out that new cells are formed only from existing cells.
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Cell Theory:
1. All living things are made up of cells.
2. Cells are the basic units of structure and function in living things – cell are the basic units of life.
3. All cells come from other living cells.
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