unit 7. discovery of a cell robert hooke used a microscope to look at a piece of cork. he saw...
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CELL ORGANELLESUnit 7
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Discovery of a Cell
Robert Hooke used a microscope to look at a piece of cork.
He saw little squares that look like prison cells.
Named them cells
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Organelle
Cells are made of smaller parts called organelles.
Each organelle has a specific function.
Plants and animal cells have some different organelles.
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Cell Membrane Covers the outside of the cell and
controls what enters and exits Only animals and plants
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Cytoplasm A jelly like liquid that fills the cell.
Organelles can move around the cell Plants and animals
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Nucleus Controls all activities in the cell and
houses the DNA. (brain of cell) Plants and animals
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Mitochondrion Changes food and oxygen into
energy. (Power house of the cell) Plants and animals
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Vacuole Storage area of the cell. Holds water,
food, and minerals……BIGGER in plant cells
Plants and animals
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Vacuoles in Plants
Vacuoles are much larger in plants.
Storing food.
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Lysosome Breakdown and recycle material in a
cell (known as the “stomach of the cell”)
Animals
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Nuclear Membrane
Controls what enters and exits the nucleus.
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Cell Wall Surrounds the cell. Gives the cell
shape and structure. (bones of the cell)
Plants only
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Chloroplast Contains chlorophyll that traps
sunlight. Photosynthesis occurs here. Plants only
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Plant cell
What do you think the green dots are?
Where on a plant would you find cells like this?
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Animal Cells