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| the rigid,porous outer layer of a plant cell. |
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| a bundle of microtubules that helps organize the movement of chromosomes. during cell division |
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| an organelle that convent the radiant energy of the sun into chemical energy through the process of photosynthesis. |
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| a jelly like substance composed mainly of water,occupying most of the space between the cell membrane and the nucleus |
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| a network of passageways in which chemical compounds are manufactured, processed, and transported |
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