1. Examples of heptoses include the ketose s mannoheptulose and sedoheptulose. 2. If the sugar contains a ketone group, it is a ketose . 3. It has one ketone group and so is part of the ketose family. 4. Aldose and ketose , although differ in structures, also perform in different roles. 5. The straight-chain ketose is formed. 6. An aldose may isomerize to a ketose through the Lobry-de Bruyn-van Ekenstein transformation. 7. To close the fructose ring, the reverse of ring opening occurs and the ketose is protonated. 8. A typical rearrangement reaction is that between the aldose glyceraldehyde and the ketose dihydroxyacetone in a chemical equilibrium. 9. "' Sorbose "'is a ketose belonging to the group of sugars known as monosaccharides. 10. "' Seliwanoff s test "'is a chemical test which distinguishes between aldose and ketose sugars.
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