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In the human body, oxygen is absorbed by the lungs and nutrients are absorbed by the small intestine. In a single-celled organism, this absorption directly involves the 1. nucleus 2. chloroplasts 3. cell
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In the human body, oxygen is absorbed by the lungs and nutrients are absorbed by the small intestine. In a single-celled organism, this absorption directly involves the 1. nucleus 2. chloroplasts 3. cell membrane 4. chromosomes

User Ov
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It's a Cell membrane.
User Shealtiel
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3.) the cell membrane.
User Dee Mon
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