Intestinal absorption is faster for
I. Absorption of carbohydrates -
II. Essentially all food carbohydrates are absorbed in the form of monosaccharides; only a small fraction are absorbed as disaccharides and almost none as larger carbohydrate compound of monosaccharides: - Hexoses (glucose, fructose) pentoses (ribose).
III. Site →Small intestine Q
a. Glucose and galactose are absorbed by a common Na+ dependent active transport system. (Co-transporter or symport) Q
b. Fructose — by facilitated diffusion (independent of Na+ or transport of glucose and galactose) Q
c. Pentoses are absorbed by simple diffusion Q
IV. Maximal rate of glucose absorption from intestine is about 120 gm/hour Q.
V. “Absorption rate of galactose is more than glucose; while fructose is absorbed at a lesser rate than glucose i.e. galactose > glucose> fructose pentoses (ribose).