Question

Which of the following statements regarding lipid membranes is TRUE?

(a) Phospholipids will spontaneously form liposomes in nonpolar solvents.
(b) In eucaryotes, all membrane-enclosed organelles are surrounded by one lipid bilayer.
(c) Membrane lipids diffuse within the plane of the membrane.
(d) Membrane lipids frequently flip-flop between one monolayer and the other.
(e) The preferred form of a lipid bilayer in water is a flat sheet with exposed edges

Answer 1

The correct statement regarding lipid membranes is that membrane lipids diffuse within the plane of the membrane.

Step-by-step explanation:

The correct statement regarding lipid membranes is c. Membrane lipids diffuse within the plane of the membrane.

Lipids in cell membranes are polar and amphipathic, meaning they have both polar and nonpolar parts. These lipids arrange themselves in a bilayer, with their hydrophilic heads facing outward and their hydrophobic tails facing inward. Within the bilayer, membrane lipids can freely diffuse laterally within the plane of the membrane.

Key terms: lipid membranes, polar lipids, amphipathic, bilayer, hydrophilic heads, hydrophobic tails, diffusion