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slava [35]
1 year ago
14

Permeability is the condition of being capable of having materials flow into and out of a membrane. The permeability of a cell m

embrane is determined by how easily a molecule can diffuse across the membrane. Usually, only molecules that are fat-soluble can permeate across a cell membrane. Why is this the case?
A. Water-soluble molecules are nonpolar.
B. Water-soluble molecules are too large.
C. Cell membranes are composed of a lipid bilayer.
D. Cell membranes are composed of cytosol.
Biology
1 answer:
Andrej [43]1 year ago
4 0

Answer:

C. Cell membranes are composed of a lipid bilayer.

Explanation:

The cell membrane delimits the contents of the cell. A typical cell membrane is largely made up of phospholipids. Other components include the glycolipids, sterols, and proteins. The phospholipids component arrange themselves in a double layer (bilayer), forming a hydrophobic core.

<em>Fat soluble molecules are able to permeate across the cell membrane due to the lipid bilayer components - lipid in itself being a form of fat.</em>

The correct option is C.

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