NEET BIOLOGY

Detailed explanation-1: -With the help of bile salts and lecithin, the dietary fats are emulsified to form micelles, which can carry the fat particles to the surface of the enterocytes. There, the micelles release their fats to diffuse across the cell membrane.

Detailed explanation-2: -Lipases break down the lipids into fatty acids and glycerides. These molecules can pass through the plasma membrane of the cell, entering the epithelial cells of the intestinal lining. The bile salts surround long-chain fatty acids and monoglycerides, forming tiny spheres called micelles.

Detailed explanation-3: -Bile salts envelop the fatty acids and monoglycerides to form micelles. Micelles have a fatty acid core with a water-soluble exterior. This allows efficient transportation to the intestinal microvillus. Here, the fat components are released and disseminated into the cells of the digestive tract lining.

Detailed explanation-4: -Absorption and Transport into Blood. The major products of lipid digestion-fatty acids and 2-monoglycerides-enter the enterocyte by simple diffusion across the plasma membrane. A considerable fraction of the fatty acids also enter the enterocyte via a specific fatty acid transporter protein in the membrane.

Detailed explanation-5: -Longer chain fatty acids, glycerol and monoglycerides are carried in micelles, to the epithelial cells lining the small where they break down and diffuse across the phospholipid bilayer. In the cell they are reassembled into triglycerides and packaged with cholesterol and phospholipids to form chylomicrons.