What is not true about liposomes?
Correct answer: A. They are lipid vesicles with their polar heads of phospholipids on the inner and hydrophobic tails on the outer side
- A. They are lipid vesicles with their polar heads of phospholipids on the inner and hydrophobic tails on the outer side
- B. They are bilayered spherical bodies
- C. They can easily cross the lipid bilayer
- D. They can be used in drug delivery systems
Explanation
Liposomes are microscopic vesicles composed of lipid bilayers. They are characterized by having polar (hydrophilic) heads facing outward and inward, and hydrophobic tails sandwiched between, forming a bilayer. This structure allows them to encapsulate aqueous solutes and serve as delivery vehicles for drugs. The incorrect statement here is that liposomes have their polar heads on the inner side and hydrophobic tails on the outer side, which contradicts their actual bilayer structure. The other options correctly describe liposomes as bilayered spherical bodies and their function in drug delivery systems, but the statement about crossing the lipid bilayer pertains to their role as carriers, not their own movement across membranes.
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