Lipids/Fatty Acids Flashcards
What are some examples of Lipids ?
Fats , Oils and Steroids
Are lipids non-polar and why ?
Yes, they are non-polar due to the ends are not charged .Water being polar , therefore lipids are not soluble in water ,That means tat the water and lipids molecules do not bond or share electrons in any way .And float in water without blending into it.
What are Triacylgerosis ? Tags
They are a type of Lipid
Storage form of Fatty acids in mammals
They have three ester group
How are Triacylgecoris formed ?
They are formed when the hydroxyl group on the glycerol bac k bone reacts with the carbonyl group .
Which part of are hydrogen
three hydroxyl (HO–) groups
What happens when the fatty acids ?
-OH enters we get glycerol due to attaching each carbonyl .
What does High glyceride levels causes ?
They are risk indicator to artheroslclerois .They are a combination of three fatty acid molecule with a glycerol molecule.
What is the name of the process they are formed though ?
Dehydration process in which is the loss of H20 molecule .
What is glycerol ?
Called a glycerine is an alcohol with three hydroxyl groups.
With waxes how are they formed ?
the fatty acids can react with hydroxyl groups to form esters therefore from three esters due to being three hydroxyl groups .
Why are they called fatty acids ?
Because they are part of the carbonyl group containing a carbon and hydrogen
What does unbranched mean for tricykaeride ?
They have even numbers of carbons
Saturated single bonds
Contain maximum number of hydrogen atoms possible
Unsaturated Double bonds
Contain a double bond don’t have maximum as well as two or more is poly unsaturated
What are the two types of double in unsaturated ?
Cis and Trans
Cis has a line on top whereas trans has a line sideways
Saturated fatty acids
They melt at higher temperatures and are single
They can pack easily together so its harder to melt
Butter is an example at room temperatures and is harder to melt
Unsaturated fatty acids
Melt at lower temperatures because the double bonds restrict rotations and therefore kink interfering with crystal packing .
Olive oil is an example at room temperature and doesn’t easily pack causing it to melt
What can TAGS BE USED FOR ?
Energy storage .Which are metabolised in our bodies releasing twice as much energy as carbohydrates .
What is the structure of Lipids composed of ?
Carbon/Hydrogen /phosphate
How is Arthelosis caused ?
Saturated fats building up in the Plaque , in which the kik were cis double binds are coated prevnt the moclules from packing together closely enough.
Hydrogenating vegetable oils
Produce saturated fats /unsaturated fats
Adding h20it can turn as trans resulting in trans fat
What group is Carbohydrates part of ?
Oxygen
