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OpenStudy (anonymous):
What cell structure regulates the entrance and exit of food, water, and oxygen? A. Cell membrane B. Cell wall C. Cytoplasm D. Nucleus
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OpenStudy (anonymous):
The cell wall is the outside lining of the cell that helps hold the cell together. The cell membrane is inside the cell membrane and has the quality of being semi-permeable so it can allow various substances to go in and out of the cell. Answer: A. cell membrane
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