Disaccharides

Question 1

How is a disaccharide forms

Answer 1

carbon that carries the aldehyde or the ketone can react with any hydroxyl group on a second sugar, water leaves

Question 2

name the 3 common disaccharides

Answer 2

maltose, lactose and sucrose

Question 3

2 sugar molecules can be joined via what bond and how

Answer 3

2 sugar molecules can be joined via a glycosidic bond between an anomeric carbon and a hydroxyl carbon

Question 4

Glycosidic bond is less reactive than what

Answer 4

An acetal between monomers is less reactive than the hemiacetal at the second monomer

Question 5

A bond formed between the anomeric carbon atom and a hydroxyl group of another molecule is what bond and what is the glycoside

Answer 5

O-glycosidic bond and the product is glycoside

Question 6

Bond formed between the anomeric carbon atom and an amine is called what bond

Answer 6

N-glycosidic bond

Question 7

Carbohydrates form what linkage to phosphates

Answer 7

Ester linkages

Question 8

Carbs have what 3 roles in nature

Answer 8

Energy, structural and information carriers

Question 9

Polysaccharides can be found in what 4 forms

Answer 9

Homo, Hetero, Linear and Branched