Lec Flashcards
Collection of organic molecules of varying chemical composition
Lipids
Solubility in non-polar solvents
Hydrophobic
Comes from greek word which means lard/fat
“lipos”
Groups of Lipids, namely:
Fatty acids
Glycerides
Non-glyceride lipids
Complex lipids
Lipoproteins
Complex lipids
Glycerol-containing lipids
Glycerides
Sphingolipids
Steroids
Wax
Non-glyceride lipids
Saturated
Unsaturated
Fatty acids
Energy source
Oxidation
How many kcal of energy in 1gram of fat
9 kcal
Energy storage
Triglyceride in adipocytes
Storage form of CHOs
Glycogen
Cell membrane structural components
Phosphoglycerides
Sphingolipids
Steroids
Basic structure of all cell membranes
Phospholipid bilayer
Hormones
Steroid hormones
Vitamins (lipid-soluble)
A,D,E and K
Vitamin absorption
Dietary fat - carrier
Protection - shock absorber
Fats
Insulation
Subcutaneous fats
Long chain monocarboxylic acids (COOH)
Even no. of c atoms
Fatty acids
A. Polar end
B. Non-polar end
A. Hydrophilic (OH)
B. Hydrophobic (R)
Short chain fatty acids
Less than 6 C
Medium chain fatty acids
6-10 C / 11
Long chain fatty acids
More than 12 C
No. of carbon atoms, namely:
Short chain fatty acids
Medium chain fatty acids
Long chain fatty acids
C being saturated with H
No double bonds
Saturated fatty acids
At least 1 C-C double bond
In cis config.
Unsaturated fatty acids
2 types (unsaturated)
Monounsaturated
Polyunsaturated
Polyunsaturated
More than 1 C-C double bond
Monounsaturated
1 C-C double bond