Why Is the Phospholipid Bilayer Considered Semipermeable

question 228

Multiple Choice

Why is the phospholipid bilayer considered semipermeable?

• A) Large molecules can only pass through the layer of hydrophilic phospholipids.
• B) The bilayer is a barrier to some,but not all,substances on either side of it.
• C) The hydrophobic tails act as a barrier to nonpolar molecules.
• D) The bilayer is completely nonpolar,which prevents some molecules from passing.
• E) Small,nonpolar molecules do not pass through the phospholipid bilayer.

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