According to the course material, how is fructose absorbed from the small intestine?

### Why this is right The material states that fructose is absorbed more slowly than glucose and galactose by simple diffusion. Glucose and galactose are actively transported through a sodium-linked system. ### The concept The monosaccharides do not all use the same absorption mechanism. Sodium-linked glucose transport depends indirectly on energy maintained by the sodium-potassium pump, while the provided text describes fructose absorption as slower and diffusion-based. ### The other options - **By the same sodium-linked active transport as glucose**: This describes glucose and galactose, not fructose in the material. - **Only after conversion to glucose in the intestinal lumen**: The material identifies fructose itself as an absorbable monosaccharide. - **Through the portal blood without crossing an intestinal membrane**: Absorption requires passage across intestinal cells before entry into blood. ### Terms - **Active transport**: Movement across a membrane that depends on energy. - **Diffusion**: Movement down a concentration gradient. ### Remember In this material, glucose and galactose use active transport; fructose is slower and diffusive.