Liposomes are artificial membrane-bounded structures used to deliver medications. They are composed of phospholipid bilayers, not single layers, and their hydrophobic regions face inward, not outward, creating an enclosed aqueous environment suitable for drug delivery. They are distinct from mixed micelles, which are involved in cholesterol transport but have a different structure and function.

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Liposomes Are

Question 50

Multiple Choice

Liposomes are

A) artificial membrane-bounded structures used to deliver medications.
B) single-layered membranes.
C) mixed micelles involved in cholesterol transport among cells.
D) bilayers with the hydrophobic regions on the outside.

Correct Answer: