HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Disaccharides are absorbed directly into the blood stream
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Galactose are absorbed more rapidly than glucose
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Glucose & galactose are absorbed by active transport mechanism
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Fructose is absorbed by facilitated absorption
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Absorption occurs in small intestine
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Detailed explanation-1: -Glucose absorption occurs in the small intestine by active transport via the SGLT-1 transporter (sodium glucose co-transporter). Galactose, fructose and some glucose absorption is completed by the Glut5 transporter by facilitated diffusion.
Detailed explanation-2: -Carbohydrate digestion begins in the mouth and is most extensive in the small intestine. The resultant monosaccharides are absorbed into the bloodstream and transported to the liver.
Detailed explanation-3: -The small intestine, pancreas, and liver From there, the wall of the small intestine begins to make lactase, sucrase, and maltase. These enzymes break down the sugars even further into monosaccharides or single sugars. These sugars are the ones that are finally absorbed into the small intestine.
Detailed explanation-4: -There are three carbohydrate products which are absorbed by the small intestine; glucose, galactose and fructose. Digestion of starch is initiated in the mouth, facilitated by salivary amylase.