Lipid notes
C7. & C8. NEUTRAL FATS, STEROIDS & PHOSPHOLIPIDS
- Large molecules, insoluble in water
- long term storage for energy (more efficient spacewise than glycogen or starch)
- vegetable oils, animal fats etc.
STRUCTURE: - A glycerol (3 Carbon) backbone with 3 fatty acids attached.
This is a Neutral Fat
- Large molecules, insoluble in water
- long term storage for energy (more efficient spacewise than glycogen or starch)
- vegetable oils, animal fats etc.
STRUCTURE: - A glycerol (3 Carbon) backbone with 3 fatty acids attached.
This is a Neutral Fat
This makes the phospholipid molecule polar
- it can dissolve in water
Saturated and Unsaturated Fats :
- it can dissolve in water
Saturated and Unsaturated Fats :
Saturated:
- all Carbon atoms have 2 Hydrogen atoms
- makes it a solid at room temperature
- lard, butter, animal fats
H H H H H H
C-C-C-C-C-C-H
H H H H H H
Unsaturated:
- Not all Carbon atoms have 2 Hydrogen atoms attached
- makes them a liquid at room temperature
- olive oil, corn oil, palm oil etc.
H H H H H
C-C=C-C-C=C=C-C-H
H H H H H
Monounsaturated: -1 Carbon atom not saturated
Polyunsaturated:
- Many double bonds
- fewer hydrogens
Steroids: 4 Carbon rings (5 or 6 carbons) in each ring fused together
- related to cholesterol
- used as sex hormones
- constructed from cell membranes
- all Carbon atoms have 2 Hydrogen atoms
- makes it a solid at room temperature
- lard, butter, animal fats
H H H H H H
C-C-C-C-C-C-H
H H H H H H
Unsaturated:
- Not all Carbon atoms have 2 Hydrogen atoms attached
- makes them a liquid at room temperature
- olive oil, corn oil, palm oil etc.
H H H H H
C-C=C-C-C=C=C-C-H
H H H H H
Monounsaturated: -1 Carbon atom not saturated
Polyunsaturated:
- Many double bonds
- fewer hydrogens
Steroids: 4 Carbon rings (5 or 6 carbons) in each ring fused together
- related to cholesterol
- used as sex hormones
- constructed from cell membranes