NEET · BiologyHard
Which of the following best describes the mechanism of lipid absorption in the small intestine?
- A.Fatty acids and monoglycerides are absorbed directly into the blood capillaries
- B.Micelles transport lipids to the enterocyte membrane where they diffuse into the cell
- C.Chylomicrons are formed in the intestinal lumen and absorbed by lacteals
- D.Bile salts are absorbed along with fatty acids into the lymphatic system
Show correct answer & step-by-step solution
Correct answer: B — Micelles transport lipids to the enterocyte membrane where they diffuse into the cell
Solution
- Lipids are emulsified by bile salts to form .
- ferry fatty acids and monoglycerides to the surface of the enterocyte.
- Lipids diffuse across the membrane, are re-synthesized into triglycerides, and packaged into .
- Hence the answer is (B).
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