The rate of absorption of sugars by the small intestine is highest for:
Correct Answer: Hexoses
Description: Hexose absorption is twice as fast as pentose absorption. The absorption rate of hexoses in intestine is : Galactose> Glucose > Fructose. Glucose & Galactose are absorbed by SGLT-1 (Sodium dependent glucose transpo), against the concentration gradient (active transpo). But Fructose is absorbed by GLUT-5, along the concentration gradient (passive transpo). (remember passive transpo is much slower as compared to active transpo) All the monosaccharides exit from intestinal cells into blood GLUT-2. Disaccharides and polysaccharides are broken down to their respective monosaccharides before absorption.
Category:
Biochemistry
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now