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Biology, 21.06.2019 22:00
In what for do plants utilize nitrogen? why do they need nitrogen?
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When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection
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Biology, 22.06.2019 20:00
The cellular plasma membrane is selectively permeable, which means some materials move through it while others cannot. the movement of materials into and out of the cell is called membrane transport. this activity will you identify the different mechanisms of membrane transport
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Which organelle makes the proteins that are needed by the cell...
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