carbonyl group
Glucose is a type of simple sugar. There are two functional groups in glucose. The functional groups are aldehyde and hydroxyl.
Hydroxyl
Glucose is an aldohexose, meaning it is a monosaccharide with six carbon atoms and an aldehyde functional group. Aldopentoses, on the other hand, have five carbon atoms and an aldehyde functional group.
Both lipids and carbohydrates share the hydroxyl functional group (-OH). In lipids, this group is found in glycerol, while in carbohydrates, it is found in monosaccharides like glucose.
Carbonyl group
The main functional group found in cellulose is the hydroxyl (-OH) group, which repeats along the glucose molecules forming hydrogen bonds between cellulose chains. There are also acetal functional groups formed between glucose molecules through glycosidic linkages.
The hydroxyl (-OH) functional group in carbohydrates makes them polar. This group is present in monosaccharides like glucose and fructose, adding polarity to the molecule.
In the Fischer projection, D-fructose has a ketone functional group on the second carbon, while D-glucose has an aldehyde functional group on the first carbon. Additionally, D-fructose is a ketohexose with a five-membered ring structure, while D-glucose is an aldohexose with a six-membered ring structure.
Carbohydrates contain both a hydroxyl (-OH) functional group and a hydrogen (-H) functional group, making them a source of energy for organisms. Sugars like glucose and fructose are examples of carbohydrates that fit this description.
The functional group is the NH2. It is an amino functional group.
Monosaccharides are classified by the number of carbon atoms and the types of functional groups present in the sugar. For example, glucose and fructose have the same chemical formula (C6H12O6), but a different structure: glucose having an aldehyde (internal hydroxyl shown as: -OH) and fructose having a keto group (internal double-bond O, shown as: =O). This functional group difference, as small as it seems, accounts for the greater sweetness of fructose as compared to glucose.
An aldohexose is a type of monosaccharide with six carbon atoms and an aldehyde functional group. Examples of aldohexoses include glucose and galactose. They are important sources of energy in living organisms.