2-2: Bacterial cytoplasmic membrane

Question 1

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

Question 4

Composition of cytoplasmic membrane

Answer 4

Phospholipid bilayer (hyrdrophilic/hydrophobic)
Proteins

Question 5

Phospholipid composition

Answer 5

Side chain, glycerol phosphate backbone, fatty acid tails

Question 6

Three types of membrane proteins

Answer 6

Peripheral membrane
Transmembrane
Integral membrane