Lec 16

Question 1

Typical membrane is 50/50 between

Answer 1

Proteins and phospholipids

Question 2

Transporters and channels

Answer 2

Move molecules across the membrane

Question 3

Anchors

Answer 3

Connect what is outside the cell to what is inside the cell

Question 4

Receptors

Answer 4

Bind to something on the outside and send signal to inside

Question 5

Enzymes

Answer 5

Performs chemical reaction

Question 6

Integral membrane proteins

Answer 6

Pass through membrane

Question 7

Peripheral membrane proteins

Answer 7

Are attached to membrane via integral membrane proteins

Question 8

Integral membrane protein types

Answer 8

Transmembrane with a single alpha helix

Transmembrane with multiple alpha helixes

Transmembrane with beta barrel

Monolayer associated membrane protein

Lipid linked protein

Question 9

Transmembrane with a single alpha helix example

Answer 9

SNAREs (held to membrane by one alpha helix)

Question 10

Transmembrane with multiple alpha helixes example

Answer 10

Channel proteins (multiple lines in drawing)

Question 11

Transmembrane with beta barrel example

Answer 11

Porins in mitochondria

Question 12

Monolayer associated membrane protein example

Answer 12

Smooth ER enzymes

Only protrudes into one face of the phospholipid bilayer

Question 13

Spectrins

Answer 13

Peripheral plasma membranes

allow RBCs to be flexible