Energy Production In Lipids Flashcards
True or false: lipids are hydrophilic
False - they’re hydrophobic
Are lipids soluble in water?
No
True or False: Lipids are more reduced than carbohydrates
True. This means they release more energy when oxidised
True or false: complete oxidation of lipids requires more oxygen than carbohydrates
True - lipids are more reduced than carbohydrates
Give 3 examples of fatty acids derivatives
- fatty acids
- Triacylglycerols
- Phospholipids
Give 3 examples of Hydroxy-methyl-glutaric acid derivatives
- Ketone bodies
- Cholesterol
- Bile acids and salts
Give 4 examples of lipid soluble vitamins
A, D, E and K
What are fatty acids stored as
Triacylglycerols
Where do you get lipid soluble vitamins from
Diet
What are triacylglycerols made up of
3 carbon glycerol backbone and 3 fatty acid side chains
What process produces triacylglycerols
Esterification
What process breaks down triacylglycerols
Lipolysis
Are triacylglycerols hydrophobic or hydrophilic
Hydrophobic
Where are triacylglycerols stored
Adipose tissue
How are triacylglycerols stored?
In an anhydrous form of lipid droplets
What hormone mobilises fat
Glucagon
What hormone causes the storage of fat
Insulin
What are chylomicrons
Lipoprotein particles that transport triglycerides in the blood via the lymphatics to adipose tissue
What hydrolyses lipids in the pancreas
Pancreatic lipases
How are fatty acids transported from storage in adipose tissue to consumer tissue
Albumin fatty acids complexes
What happens to fatty acids in consumer tissues
Oxidised to produce energy
In which cells does metabolism of fatty acids not occur
- RBC as they have no mitochondria
2. Brain as fatty acids cant pass through the blood brain barrier
What does a low glucose level do to fatty acids stores in adipose tissue
Releases it to be used as an alternative fuel
What does it mean if fats are saturated and unsaturated
- saturated = no double bonds
- unsaturated = one or more double bonds
What does amphipathic mean
Contains both hydrophobic and hydrophilic groups