How does the absorption of a water-soluble molecule differ from that of a fat-soluble molecule?

Answer 1

Fat-soluble molecules such as fatty acids utilize facilitated diffusion whereas water-soluble molecules utilize osmosis

Answer 2

Water-soluble molecules are absorbed through passive diffusion or facilitated transport in the intestines, while fat-soluble molecules are absorbed with the help of bile salts and form micelles for absorption through simple diffusion in the small intestine. No specific transporters are needed for fat-soluble molecules due to their ability to pass through the cell membrane easily, unlike water-soluble molecules which require specific transporters for absorption.