Quiz - Carbohydrates | Carbohydrates

Organic Chemistry 3 - Quiz - Carbohydrates


What atoms are carbohydrates made of?

A carbohydrate is a biomolecule consisting of carbon, hydrogen and oxygen atoms


What are monosaccharides?

Monosaccharides, also called simple sugars, are the simplest form of sugar and the most basic units of carbohydrates: they are aldehydes (aldoses) or ketones (ketoses) that contain at least 2 additional hydroxy groups
Polysaccharides are polymers of monosaccharides


What is the most common configuration of sugars in nature?

Sugars are classified as D when the highest-numbered stereocenter (= the one farthest from the carbonyl group) is R, L when it is S. Configuration D is the most common in nature


Which of the following synthesis conditions is used to oxidize sugars to monocarboxylic acid?

Oxidation to mono- or dicarboxylic acids:


What is the mechanism of etherification of sugars?

Ag2O deprotonates each alcohols forming alkoxides RO- which reacts with CH3I in an SN2 reaction


What is the most common monomer of polysaccharides?

Nature is remarkably conservative in the construction of polysaccharides: the 3 most abundant natural polysaccharides (cellulose, starch and glycogen) are derived from the glucose