Covalent Bonding in Carbohydrates Flashcards
What do polymers of monosaccharides form?
Polysaccharides such as cellulose and chitin.
What type of reaction do two monosaccharides undergo to form a glycosidic linkage?
Condensation reaction.
What is another name for a glycosidic linkage?
O-glycosidic linkage.
Which carbon atoms are involved in the most common bond formation between hexoses?
Carbon-1 of one molecule and carbon-4 of the second molecule.
What disaccharide is formed from two glucose molecules?
Maltose.
How is the connection between two carbohydrates typically represented?
With curved arrows to the oxygen atom.
What do the equilibrium arrows indicate in carbohydrate chemistry?
The formation and degradation of the bond.
What notation is used to describe the bond between carbon-1 and carbon-4?
Alpha 1—->4 or Beta 1—–>6
What configurations are included in the notation for glycosidic linkages?
Alpha or beta configuration.
What is a common characteristic of the 1 6 O-glycosidic linkage?
It is common in polysaccharides where branches form from the main chain.
What two monosaccharides are present in lactose?
Galactose and glucose.
What type of connection does lactose have?
14 connection.
What does ordinary table sugar, sucrose, contain?
Fructose.
How does fructose exist in sucrose?
As a furanose ring.
What does an oligosaccharide of glucose molecules connected via 14 bonds generate?
A chain of molecules.
Fill in the blank: The 1 6 O-glycosidic linkage is common in polysaccharides where _______ form from the main chain.
branches.
True or False: The bond between two monosaccharides is unstable.
False.
