How does a fatty acid differ from a monosaccharide?

Typical animal fatty acids are palmitic (C16), and stearic (C18), which have ... Polysaccharides vary in their monosaccharide composition,

Explanation:

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Fatty acids consist of long, unbranched hydrocarbons with a carboxylic acid group at one end. The number of carbon atoms in a fatty acid molecule is usually even (6, 8, 12, 32, 36, etc.), although it is not impossible to find a fatty acid with an odd number of carbon atoms in its structure.

Glucose(monosaccharide) is a hexose sugar (meaning it has 6 carbon atoms in it's structure). All the carbon atoms are joined to one another in a chain. Each of the carbon atoms is also joined to at least one hydrogen atom and to one oxygen atom. The presence of all this oxygen in the structure of the glucose molecule ensures that it is strongly hydrophilic ('loves' water). Most monosaccharides, like glucose, contain a lot of energy in their bonds, but, unlike the hydrocarbons, they dissolve readily in water.

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