Question:
Discuss mechanisms of absorption.
Solution:
(i) Simple Diffusion: Small amounts of monosaccharide like glucose, amino acids and some electrolytes like chloride ions are absorbed by simple diffusion
(ii) Facilitated Transport: The transport of amino acids which is absorbed with the help of carriers like sodium ions.
(iii) Transport of water depends on the osmotic gradient.
(iv) Transport of Fatty acids and glycerol