1
Q
- Phosphoglycerides
A
- In plasma membrane
- Lipid
- Diaglycerides formed with small functional head groups linked to the glycerol backbone
2
Q
Sphingolipids
A
- In plasma membrane
- Lipid
- Ceramides formed by attachment of sphingosine to fatty acids
3
Q
Cholesterol
A
- In plasma membrane
- Lipid
- Smaller & less amphipathic, only found in animals
- Evenly distributed between leaflets
4
Q
Phosphatidylcholine
A
- In plasma membrane
- Phospholipid
- Net charge = 0 (polar head)
- Most common phospholipid in all membranes
- Mostly found in outer leaflet
5
Q
Phosphotidylethanalamine
A
- In plasma membrane
- Phospholipid
- Net charge = -1
- Major constituents of inner leaflets
6
Q
Ceramide
A
- Formed by adding a second fatty acid tail to sphingosine
- Sphingolipid
- In plasma membrane
7
Q
Sphingomyelin
A
- Formed by adding phosphorylcholine to ceramide
- Sphingolipid
- In plasma membrane
8
Q
Cerebroside
A
- Formed by adding a galactose to ceramide
- Sphingolipid
- In plasma membrane
9
Q
Gangliosides
A
- Formed by adding complex carbs to ceramide
- Sphingolipid
- In plasma membrane
10
Q
Scramblase
A
- Randomly transfers lipids to inner leaflet, preventing buildup in outer leaflet
11
Q
Phospholipases
A
- Can break down phospholipids
- Have phospholipase D, C, A1, & A2
12
Q
Phospholipase D
A
- Releases polar head group in phospholipids
13
Q
Phospholipase C
A
- Releases polar head group from phosphate
14
Q
Phospholipases A1 & A2
A
- Release fatty acid tails in phospholipids from the C1 & C2 positions respectively
