MIC180 Chapter 5 Carbohydrates Part 3

Polysaccharides are many monosaccharide molecules linked together.

• True

• False

Cellulose is made of of this repeating disaccharide.

What is the monomer component of the polysaccharide pectin?

• D-glucose

• D-galactose

• D-fructose

• D-galacturonic acid

Answer explanation

What polysaccharide is the major structural component of the exoskeletons of invertebrates and crustaceans?

• Peptidoglycan

• Pectin

• Chitin

• Cellulose

Which polysaccharide consists of repeating NAM-NAG sugar molecules?

• Peptidoglycan

• Pectin

• Chitin

• Cellulose

The following examples are structural polysaccharides EXCEPT..

• Cellulose

• Peptidoglycan

• Chitin

• Glycogen

Answer explanation

Glycogen is a type of storage polysaccharide.

Starch is an example of storage polysaccharides.

• True

• False

Glycogen is the storage polysaccharide in plants.

• True

• False

Answer explanation

Glycogen stores energy in animals.

Below are examples of homopolysaccharides EXCEPT..

• Starch

• Cellulose

• Pectin

• Peptidoglycan

Answer explanation

Peptidoglycan consists of sugars and peptides (amino acid) cross-links and therefore is a heteropolysaccharide.

X is an example of polysaccharides that is commercially used as gelling agent in the food industry. What is X?

• Cellulose

• Starch

• Pectin

• Sucrose