Moderate

Liposomes are:

Correct answer: D. ALL A, B, C

  • A. Drug carriers
  • B. Water in middle
  • C. Sac of phospholipids
  • D. ALL A, B, C

Explanation

Liposomes are spherical vesicles that act as drug carriers, containing water in their central core surrounded by a lipid bilayer. While they are primarily composed of lipids, they can encapsulate water-soluble substances; they do not naturally contain sacs of polysaccharides, although polysaccharides can be attached or incorporated for specific biomedical applications..

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About Biological Molecules

The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.

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