Question 36
We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals and water. After digestion, these are absorbed in the form of glucose, amino acids, fatty acids, glycerol etc. What mechanisms are involved in the absorption of digested food and water?
Most of the end-products of digestion, along withvitamins, minerals, and water, are absorbed in the small intestinal lumen by four mechanisms for absorption:
(1) active transport
(2) passive diffusion
(3) endocytosis
(4) facilitated diffusion