Moderate

Ions cannot cross which part of the plasma membrane?

Correct answer: A. Phospholipid bilayer

  • A. Phospholipid bilayer
  • B. Channel proteins
  • C. Both A and B
  • D. None of the above

Explanation

Ions are unable to move through the phospholipid bilayer because the nonpolar tail regions of the phospholipids are hydrophobic.

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