the cell. cell the basic unit of structure and function in living things. cells perform processes...
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THE CELL
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CELL
The basic unit of structure and function in living things.
cells perform processes that a living thing needs in order to stay alive. For example:
- obtaining oxygen - getting rid of waste - growing
cells are what living things are made of.
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FUN FACTS ABOUT CELLS!
Cells come in different shapes and sizes Circular, “penne pasta”, amorphous (no shape) Cells are what living things are made of
Size of Cells: varies-largest cell
Ostrich egg
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What do cells do?
Unicellular organisms- single cell performs all functions for that organism. Movement Eating Water absorption
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Multicellular Organsims
Muscle cell They make up muscle tissue
Skin cellskin cells make up our skin tissue that makes our skin which is the largest organ in our body!
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HOW DID WE DISCOVER THE CELL??
Robert Hooke: built his own compound microscope in order to observe a thin slice of cork (bark of cork tree).
He came up with the term "cell" to describe what he saw.
Cell means "small room”
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Anton van Leeuwenhoek
observed lake water through a microscope.
called the unicellular organisms he saw"animalcules".
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Scientists, their discoveries, and the creation of the Cell Theory Schleiden: in 1838, concluded that
all plants are made of cells Schwann: in 1839, concluded that
all animals are made of cells. Virchow: in 1855, proposed that all
cells come from other cellsTogether, these scientists and others
helped to develop the cell theory.
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CELL THEORY
1. Living things are composed of cells. 2. Cells are the basic units of structure
and function. 3. Cells are produced by other cells.