Q. Go through the following statements regarding the absorption of fats. Find correct and incorrect statements and choose an option accordingly from the codes given below. I. Micelles and chylomicron are concerned with the absorption of fats II. Chylomicrons are water soluble dropelets of fat which contains triglycerides, sterol and phospholipids III. Micelles are water soluble droplets of fatty acids and glycerols which are formed by the action of bile pigments on fats and glycerol IV. Chylomicron, protein coated small vesicles are released from the intestinal cells into the blood stream by lacteals
A) II and IV are correct while I and III are incorrect
B) I, III and IV are correct, while II is incorrect
C) I, II and IV are correct while III is incorrect
D) IV and I are correct while II and III are incorrect
Explanation
Absorption of fats and fat soluble vitamins takes place by simple diffusion. Fats and fats soluble vitamins like A, D, E, K cannot reach into the blood directly, due to insolubility in water. So, they are first incorporated into small, spherical water soluble droplets called micelles by the action of bile salts (Na-glycocholate and Na-taurocholate). Micelles (an aggregate of fat soluble vitamins, glycerides and cholesterol) are absorbed by intestinal cells, where they are again synthesised in the endoplasmic reticulum and are released from the intestinal cells into the blood stream through lacteals
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.