Lesson 2.2 Archaeal Cell Wall

Question 1

Bacteria have peptidoglycan while archeans have ______

Answer 1

pseudomurein

Question 2

Not all aracheans have pseudomurein, but species like ____

Answer 2

methanogens

Question 3

How do archeans cell wall composition differ from bacteria?

Answer 3

Both have N-acetylglucosamine but archaeans have N-acetyltalosaminuronic acid

Question 4

How do archeans cell wall differ from bacteria?

Glycosidic bond

Answer 4

Archaeal cell wall: connected to beta-1,3 instead of 1,4

Question 5

Difference between peptidoglycan and psuedomurein

Answer 5

Peptidoglycan: sensitive to lysosomes
Psuedomurein: unbreakable

Question 6

Most common type of cell wall in Archaea

Answer 6

S layer or paracrystalline surface layer

Question 7

It is consists of interlocking molecules of protein or glycoprotein

Answer 7

S layer

Question 8

S layer is consists of varied symmetries such as

Answer 8

hexagonal and pentagonal

Question 9

S layers can be found in all representative of Arachea

Answer 9

true

Question 10

S layers can also be found in bacteria

Answer 10

true

Question 11

S layer is relatively weak to withstand osmotic pressure withou other wall components

Answer 11

false