Biology Quiz: Starch and Cellulose

What is the storage polysaccharide of plants?

• Fructose

• Glucose

• Starch

• Cellulose

In which organelles are starch granules stored?

• Nucleus

• Chloroplasts

• Mitochondria

• Endoplasmic Reticulum

Which type of bond is found between α-glucose molecules in amylose?

• 1,6 glycosidic bonds

• Hydrogen bonds

• 1,4 glycosidic bonds

• Peptide bonds

What percentage of starch is composed of amylose?

• 5 - 15%

• 40 - 60%

• 70 - 90%

• 10 - 30%

What is the main function of starch as a storage polysaccharide?

• Compact storage

• Cell communication

• Structural support

• Energy production

Which type of glucose molecule forms the chains in cellulose?

• Galactose

• Fructose

• β-glucose

• α-glucose

What is the main structural component of plant cell walls?

• Chitin

• Starch

• Lignin

• Cellulose

How are consecutive β-glucose molecules joined in cellulose?

• 1,4 glycosidic bonds

• 1,6 glycosidic bonds

• Hydrogen bonds

• Peptide bonds

What provides the strength to cellulose due to the many hydrogen bonds?

• Branching structure

• Parallel chains of microfibrils

• Lignin molecules

• Cellulose granules

What allows cell walls to withstand turgor pressure?

• Presence of amylopectin

• High sugar content

• Low water content

• High tensile strength of cellulose