What structure forms a barrier between the cytoplasm and the environment outside the cell?

• Correct Answer: cell membrane
• Flippases
• Lipid bilayer
• Cytoskeleton

Explanation: The cell membrane is like the bag holding the Jell-O. It encloses the cytoplasm of the cell. It forms a barrier between the cytoplasm and the environment outside the cell. The function of the cell membrane is to protect and support the cell. It also controls what enters or leaves the cell. It allows only certain substances to pass through. It keeps other substances inside or outside the cell.

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