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Cells
Cell structures and their functions
4
Science
7th Grade
11/21/2011

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Term
Cell wall: nonliving, made of cellulose, allows________________ to pass through, found only in plants.
Definition
certain materials
Term
Cell Membrane:
Definition
thin and flexible, surrounds cell, just inside cell wall in plant or outer covering in animal cell.
Term
Funtions of a cell membrane:
a. allows cell to _______________ under pressure
b. keeps protoplasm seperated from_________________________
c. controls movement of materials ___________________________________
Definition
a. change shape
b. outside environment
c. in and out of cell
Term
nucleus:large and oval, _____________________________________________ (brain), contains two types of nucleic acids that store information and help a cel make substances it needs.
Definition
control centerr of the cell
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