Which of the following is true regarding the absorption mechanism of carbohydrates in the intestine?

Glucose is absorbed passively

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Galactose is absorbed passively

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Fructose is transported actively

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Glucose and galactose are transported actively

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Solution

The correct option is D Glucose and galactose are transported actively
Glucose and galactose transport against the concentration and hence require energy and carrier which transport them from lumen of the intestine to cell and are co transported with sodium ion.
So the correct option is 'Glucose and galactose are transported actively'

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Small amounts of monosaccharides like glucose, amino acids and some of electrolytes like chloride ions are absorbed by (i). However, some of the substances like fructose and some amino acids are absorbed by the mechanism called (ii). Various nutrients like amino acids and electrolytes like Na+ are absorbed into the blood by (iii).

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