BIOLOGY
MONOSACCHARIDES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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Either A or B
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None of the above
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Detailed explanation-1: -Monosaccharides are polyhydroxy aldehydes or ketones; that is, they are molecules with more than one hydroxyl group (―OH), and a carbonyl group (C=O) either at the terminal carbon atom (aldose) or at the second carbon atom (ketose).
Detailed explanation-2: -Monosaccharide Structure One of the carbons in the chain will form a double bond with an oxygen, which is called a carbonyl group. If this carbonyl occurs at the end of the chain, the monosaccharide is in the aldose family. If the carboxyl group is in the middle of the chain, the monosaccharide is in the ketose family.
Detailed explanation-3: -Simple monosaccharides have a linear and unbranched carbon skeleton with one carbonyl (C=O) functional group, and one hydroxyl (OH) group on each of the remaining carbon atoms.
Detailed explanation-4: -Ketone-containing monosaccharides are fructose and ribose. These are also known as ketoses. So, monosaccharides contain a carbonyl group either having an aldehyde group or a ketone group. Therefore, the given statement is False.