Extracellular Structures

Question 1

What is the plant cell wall mostly made of

Answer 1

Cellulose (a polysaccharide)

Question 2

What are the functions/structure of the Animal Extracellular Matrix

Answer 2

Maintains cell attachments, allows communication, maintains tissue integrity
Structure: secreted glycoproteins

Question 3

What are integrins

Answer 3

Integral membrane proteins that link extracellular matrix to cytoskeleton

Question 4

Collagen fibers are linked to integrins with ___________

Answer 4

fibronectin

Question 5

Extracellular matrix structure is formed by ______, these also ____________

Answer 5

1. collagen

2. connect cells over long distances

Question 6

Large channels that provide non-selective transport of small molecules btw cells

Answer 6

Gap junctions

Question 7

What are epithelial layers

Answer 7

Layers of cells btw you and the environment

Question 8

_______ cells have gap junctions

Answer 8

epithelial

Question 9

__% of cancers are ______ in origin

Answer 9

1. 90%

2. epithelial

Question 10

What do desmosomes allow animal cells to do

Answer 10

Distribute stretching forces across a tissue

connects adjacent cytoskeletons

Question 11

What do tight junctions do

Answer 11

seals cells together, prevents passing of molecules/viruses/etc btw cells and environment