OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
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property of biological membranes that allows some substances to pass across it while others cannot; also called semipermeable membrane
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Organelle
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Selectively Permeable
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Endoplasmic Reticulum
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Lipid Bilayer
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Explanation:
Detailed explanation-1: -The selective permeability of biological membranes to small molecules allows the cell to control and maintain its internal composition. Only small uncharged molecules can diffuse freely through phospholipid bilayers (Figure 2.49).
Detailed explanation-2: -What Makes the Cell Membrane Selectively Permeable? The cell membrane is selectively permeable due to its structure. The phospholipids are arranged in a bilayer with the hydrophobic tails facing inward. The tails are packed tightly together, thus preventing any large molecules from diffusing through.
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