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Vocabulary for the first part of the Cells unit.

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Cell   The basic building blocks of living things  
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Organelle   The parts of a cell. Each one has a specific function  
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Cell membrane   A thin, flexible barrier around the outside of all cells. This organelle controls what enters and leaves the cell (selective permeability).  
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Cell Wall   A thick protective layer around the outside of plant cells. This organelle gives plant cells a stiff and rigid shape.  
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Cytoplasm   The liquid that fills the inside of cells.  
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Nucleus   The control center of cells. Contains the DNA of the cell (in eukaryotic cells)  
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Chloroplast   The organelle that absorbs sunlight and turns it into sugar (photosynthesis)  
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Mitochondria   The organelle that converts sugar into ATP energy.  
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Ribosome   This organelle creates proteins for the cell.  
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Vacuole   The organelle that stores extra water, vitamins, and other materials.  
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Lysosome   The organelle that removes waste from the cell.  
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Prokaryotic   Cells that do not have a nucleus.  
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Eukaryotic   Cells with a nucleus.  
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Unicellular   Organisms made up of only one cell.  
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Multicellular   Organisms made up of more than one cell.  
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Tissue   A group of cells working together to perform a specific function.  
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Organ   A group of tissue working together to perform a specific function.  
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Organ System   A group of organs working together to perform a specific function.  
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Regulate   To control something.  
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ATP energy   The type of energy that living things need. Produced in the mitochondria by combining sugar and oxygen.  
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Selective Permeability   Choosing what enters or leaves.  
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