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Answer:
The cell membrane
Step-by-step explanation:
The cell membrane allows for the passage of small, hydrophobic materials in and out of its phospholipid bilayer. It also have channels and pumps that can bring in and out larger molecules and proteins.
Which organelle is semi-permeable and allows the thing in and out of the cells?
The cell membrane is semi-permeable as it allows materials in and out of the cell