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The cell membrane of a red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Since other substances are blocked from coming in, this membrane is called

Aperforated.
Bsemi-permeable.
Cnon-conductive.
Dpermeable.

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The best answer is B (semi permeable)
The cell membrane of a red blood cell is semi permeable membrane. This is a type of biological membrane that will allow certain molecules or ions to pass through while barring others.

Red blood cells have very thin membranes that allow oxygen diffuse through quickly. They are also permeable to water and osmosis across the membrane occurs very rapidly. In the body, they are bathed  in isotonic plasma in which case water movement  into the cell is equal to water movement out of the cell and so the cells remain intact.

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