ANSWER: No, mannose is not a Ketose.

A ketose is a type of monosaccharide, or simple sugar, that contains a ketone functional group (-CO-). Ketoses are characterized by the presence of a ketone group in the middle of the molecule, rather than at the end like in aldoses.

Mannose is an aldose sugar, meaning that it contains an aldehyde functional group (-CHO) at the end of the molecule. Aldoses are typically sweeter and less stable than ketoses, and are also more easily metabolized by the body for energy.

In addition to mannose, other common aldoses include glucose, galactose, and fructose. These sugars are found naturally in many fruits, vegetables, and other plant-based foods, and are also used as sweeteners and dietary supplements. Aldoses have several important functions in the body, including the metabolism of carbohydrates, the synthesis of enzymes and hormones, and the support of the immune system.

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