Starch, Glycogen & Cellulose

Question 1

Starch is a ……..saccharide

Answer 1

Polysaccharide

Question 2

How are glycosidic bonds in starch formed?

Answer 2

Condensation reactions

Question 3

How is starch made very compact?

Answer 3

Wound into a tight coil

Question 4

Why doesn’t starch affect water potential?

Answer 4

It’s insoluble

Question 5

How is starch suitable for storage in small spaces?

Answer 5

Very compact

Question 6

Does starch form alpha glucose or beta glucose when hydrolysed?

Answer 6

Alpha glucose

Question 7

In what type of cell is starch never found?

Answer 7

Animal cells

Question 8

In which type of cell is glycogen never found; plant, bacteria or animal?

Answer 8

Plant cells

Question 9

How is glycogen different to starch?

Answer 9

Glycogen has shorter chains

Question 10

How is glycogen stored in animals?

Answer 10

Small granules in the muscle and the liver

Question 11

Is glycogen soluble or insoluble?

Answer 11

Insoluble

Question 12

How does cellulose differ from starch and glycogen?

Answer 12

Cellulose is beta glucose while starch and glycogen are alpha glucose

Question 13

How does the structure of starch differ from that of cellulose?

Answer 13

Cellulose has straight, unbranched chains and starch has coiled chains

Question 14

What bonds are in cellulose?

Answer 14

Hydrogen

Question 15

What are groups of cellulose molecules called?

Answer 15

Microfibrils

Question 16

What does cellulose do in plant cells?

Answer 16

Provides rigidity to plant cells