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Which of these is true of a cell membrane? A: A cell membrane has a property called selective judgment. B: A cell membrane blocks all particles from coming through. C: A cell membrane is a protective structure that encloses a cell. D: all of the above

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Answer:

The answer is A.

Explanation:

Because the cell membrane is selectively- permeable (it allows certain substances in and out of the cell). It doesn't actually BLOCK particles from coming through.