Structural Material

Question 1

Most important structural materials to kingdom of life cellulose, _ and _ (2)

Answer 1

Chitin

Collagen

Question 2

All of the materials are _

Answer 2

Polymers

Question 3

These molecules can be easily combined to form strong (2)

Answer 3

Fibers

Sheets

Question 4

The fibers and sheets make them fundamental in providing _ for body parts (2)

Answer 4

Shape

Support

Question 5

_ is most abundant naturally occurring compound

Answer 5

Cellulose

Question 6

Cellulose is a _ made from long chains of glucose

Answer 6

Polysaccharide

Question 7

Cellulose is main material in

Answer 7

Walls of all plant cells

Question 8

Cellulose gives _

Answer 8

Structure

Question 9

Wood bark is made from cellulose fibers cross-linked with other _

Answer 9

Molecules

Question 10

Centipede’s body segments joined with _ allowing body to flex

Answer 10

Chitin

Question 11

Butterfly body and wings covered in reflective scales made of

Answer 11

Chitin

Question 12

_ are formed from layers of chitin

Answer 12

Beetles protective rigid wing covers

Question 13

Beetle’s wing covers are called _

Answer 13

Elytra

Question 14

Plant stems are strengthened by _ made from cellulose

Answer 14

Vascular tubes

Question 15

Chitin gives _ its rigidity

Answer 15

Bee’s exoskeleton

Question 16

Chitin is insoluble so it forms

Answer 16

waterproof barrier

Question 17

Chitin is strong but (2)

Answer 17

Flexible

Lightweight

(Flying insects)

Question 18

Chitin is a polymer built from _ derived from glucose

Answer 18

Nitrogen-rich units

Question 19

Chitin is second only to _ in its abundance in the body of living things

Answer 19

Cellulose

Question 20

Chitin also found in (2)

Answer 20

Crustaceans

Mollusks

Question 21

Chitin also used to build cell walls in _ cells

Answer 21

Fungal