Ions are charged and so have very low permeability through a hydrophilic lipid membrane. However, ions are able to enter and exit cells by
A) active transport using the energy of ATP.
B) facilitated transport using a carrier protein.
C) diffusion through a ligand-gated channel.
D) active transport using the energy of ATP and facilitated transport using a carrier protein.
E) active transport using the energy of ATP and diffusion through a ligand-gated channel.

Question

Quizplus · Accepted Answer

The Answer of Ions are charged and so have very low permeability through a hydrophilic lipid membrane. However, ions are able to enter and exit cells by
A) active transport using the energy of ATP.
B) facilitated transport using a carrier protein.
C) diffusion through a ligand-gated channel.
D) active transport using the energy of ATP and facilitated transport using a carrier protein.
E) active transport using the energy of ATP and diffusion through a ligand-gated channel.

Ions Are Charged and So Have Very Low Permeability Through