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Cells Unit Section 1.2
Parts of the Cell
7
Science
6th Grade
10/16/2012

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Term
cell wall
Definition
a rigid structure that surrounds the cell membrane and provides support to the cell.
Term
ribosome
Definition
a cell organelle composed of RNA and protein; the site of protein synthesis.
Term
endoplasmic reticulum
Definition
a sysytem of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids.
Term
mitochondrion
Definition
in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration
Term
Golgi complex
Definition
a cell organelle that helps make and package materials to be transported out of the cell.
Term
vesicle
Definition
a small cavity or sac that contains materials in a eukaryotic cell.
Term
lysosome
Definition
a cell organelle that contains digestive enzymes.
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