2-2: Bacterial cytoplasmic membrane

Question 1

What are the structures of cell envelope

Answer 1

Cytoplasmic membrane, cell wall, outer membrane, S-layers

Question 2

Roles of cell envelope

Answer 2

Barrier with environment
Protect from stress
Transport nutrients/waste in/out
Energy conservation

Question 3

Role of the cytoplasmic membrane

Answer 3

Primary barrier between inner/outer environment

Question 4

Phospholipid composition

Answer 4

Side chain, glycerol phosphate backbone (conserved in bacteria/eukarya, fatty acid tails

Question 5

Three types of membrane proteins

Answer 5

Peripheral membrane
Transmembrane
Integral membrane