It sort of depends on how restrictive your definition of "carbohydrate" is. If you're using it in a way synonymous with "saccharide" (common, but not necessarily the only possible definition), then they will have hydroxyl groups and might have either an aldehyde or a ketone group (or they may not, for example glucose in its hemiacetal form), but they will not have a carboxylic acid group.
It is a carboxyl functional group, consisting of a carbonyl and hydroxyl group. It is an ACID [moiety].
Alcohols and phenols (hydroxyl 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.
hydroxyl
Vanillin is definitely a compound. It contains Carbon , hydrogen and oxygen. It has three functional groups, an aldehyde, hydroxyl, and an ether.
there are two functional groups in an aldoheptose: hydroxyl and aldehyde.
that is an aldehyde or ketone and that has more than one hydroxyl group
It is a carboxyl functional group, consisting of a carbonyl and hydroxyl group. It is an ACID [moiety].
A - Hydroxyl
Alcohols and phenols (hydroxyl functional group)
Glucose is a type of simple sugar. There are two functional groups in glucose. The functional groups are aldehyde and hydroxyl.
if the alcohol is a primary alcohol the itis oxidized to give aldehyde and if secondary it gives ketone.
The main functional groups in sugar and other carbohydrates is the carbonyl group and the hydroxyl group. The carbonyl group is composed of the aldehyde and ketone groups.
carbohydrate
If you mean the hydroxyl functional group (-OH), then only serine and threonine contain it. However, all amino acids contain one or more carboxylic acid (-COOH) functional groups and they all contain OH as part of that functional group, though the carboxylic acid functional group should be considered a single unit.
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.
a carboxylic acid group, or carboxyl group