BIOMOLECULES AND ENZYMES

Detailed explanation-1: -They are classified according to the number of carbon atoms in a monosaccharide. In particular, a triose is a monosaccharide with three carbon atoms. Two naturally occurring trioses are aldotriose (glyceraldehyde) and ketotriose (dihydroxyacetone). These trioses are important metabolites in cellular respiration.

Detailed explanation-2: -Dihydroxyacetone is a ketotriose consisting of acetone bearing hydroxy substituents at positions 1 and 3. The simplest member of the class of ketoses and the parent of the class of glycerones.

Detailed explanation-3: -A related concept involves ketotrioses, which are monosaccharides that contain both a ketone (a ketose) and three carbonds (a triose). Dihydroxyacetone is an example of a ketotriose.

Detailed explanation-4: -Monosaccharides. Since carbohydrates are aldehydes or ketones with two or more hydroxyl groups, the simplest monosaccharides are the three-carbon compounds glyceraldehyde and dihydroxyacetone (DHA), which are shown in the figure below.

Detailed explanation-5: -The three main monosaccharides that we consume are fructose, galactose and glucose. These monosaccharides combine in various pairs to form the three disaccharides that are most important in human nutrition: lactose, maltose and sucrose. The monosaccharide glucose is the common thread in each of these disaccharides.