Condensation reaction

Question 1

What is a condensation reaction?

Answer 1

A chemical reaction which loses a water molecule, creating a larger more complex biomolecule.

Question 2

Describe a condensation reaction

Answer 2

FREE –H atom linked to free –OH group = H2O
Both molecules connected to Oxygen
When the connected water molecule is released, glucose molecules are connected by –O-

Forming a disaccharide

The process continues to make a long chain = polysaccharide

Question 3

Describe a hydrolysis reaction

Answer 3

Breaks the bond of a molecule with the addition of water.

Replaces the water molecule lost in condensation

Question 4

What is an example of a condensation reaction

Answer 4

Maltose is formed by the joining of alpha glucose monosaccharides.

Alpha glucose joins from adjacent -OH hydroxyl, forming H2O and O.

H2O is released and the alpha glucose is joined by O, forming a glycosidic linkage. Referred to as a-1 4-glycidic link. (carbon-1 to carbon-4 link)

Disaccharide maltose is formed.

Question 5

Example of hydrolysis reaction

Answer 5

Digestive enzyme maltase catalyses hydrolysis reaction of maltose to form two molecules of alpha-glucose.

Question 6

Formation of maltose by condensation reaction - chemical equation

Answer 6

C6H12O6+C6H1206 = C12H22O11+H2O (Formation of maltose – condensation reaction)

Question 7

Formation of glucose monomers by hydrolysis reaction - chemical equation

Answer 7

C12H22O11 (broken byH2O) = C6H12O6+C6H1206+ (Formation of glucose monomers – hydrolic reactions)