disaccharides

Question 1

examples of disaccharides

Answer 1

lactose and sucrose

Question 2

what’s a disaccharide

Answer 2

formed when two monosaccharides are joined by a glycosidic bond during a condensation reaction.

Question 3

what does alpha glucose and fructose form

Answer 3

sucrose, alpha 1-4 glycosidic bond

Question 4

what does alpha glucose and alpha glucose form

Answer 4

maltose, alpha 1-4 glycosidic bond

Question 5

what does beta glucose and alpha glucose form

Answer 5

lactose , beta 1-4 glycosidic bond

Question 6

what does beta glucose and beta glucose form

Answer 6

cellobiose , beta 1-4 glycosidic bond.

Question 7

what happens when two monosaccharides become a disaccharide

Answer 7

a condensation reaction occurs to form a glycosidic bond .The two hydroxyl(-OH) groups line up next to each other from which a water molecule is removed , this leaves an oxygen atom acting as a link between the two monosaccharide units .

Question 8

how are disaccharides broken into monosaccharides

Answer 8

by a hydrolysis reaction which requires the addition of water. The water provides a hydroxyl group (-OH) and a hydrogen (-H) which helps the glycosidic bond to break