The fructose molecule in sucrose exists as:

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(A) Sucrose is a disaccharide composed of $\alpha$-$D$-glucose and $\beta$-$D$-fructose units.In the structure of sucrose,the glucose unit exists in t

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Furanose

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(A) Sucrose is a disaccharide composed of $\alpha$-$D$-glucose and $\beta$-$D$-fructose units.In the structure of sucrose,the glucose unit exists in the pyranose form (six-membered ring),while the fructose unit exists in the furanose form (five-membered ring).Therefore,the fructose molecule in sucrose exists as furanose.

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