Lipids/Fatty Acids

Question 1

What are some examples of Lipids ?

Answer 1

Fats , Oils and Steroids

Question 2

Are lipids non-polar and why ?

Answer 2

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.

Question 3

What are Triacylgerosis ? Tags

Answer 3

They are a type of Lipid

Storage form of Fatty acids in mammals
They have three ester group

Question 4

How are Triacylgecoris formed ?

Answer 4

They are formed when the hydroxyl group on the glycerol bac k bone reacts with the carbonyl group .

Question 5

Which part of are hydrogen

Answer 5

three hydroxyl (HO–) groups

Question 6

What happens when the fatty acids ?

Answer 6

-OH enters we get glycerol due to attaching each carbonyl .

Question 7

What does High glyceride levels causes ?

Answer 7

They are risk indicator to artheroslclerois .They are a combination of three fatty acid molecule with a glycerol molecule.

Question 8

What is the name of the process they are formed though ?

Answer 8

Dehydration process in which is the loss of H20 molecule .

Question 9

What is glycerol ?

Answer 9

Called a glycerine is an alcohol with three hydroxyl groups.

Question 10

With waxes how are they formed ?

Answer 10

the fatty acids can react with hydroxyl groups to form esters therefore from three esters due to being three hydroxyl groups .

Question 11

Why are they called fatty acids ?

Answer 11

Because they are part of the carbonyl group containing a carbon and hydrogen

Question 12

What does unbranched mean for tricykaeride ?

Answer 12

They have even numbers of carbons

Question 13

Saturated single bonds

Answer 13

Contain maximum number of hydrogen atoms possible

Question 14

Unsaturated Double bonds

Answer 14

Contain a double bond don’t have maximum as well as two or more is poly unsaturated

Question 15

What are the two types of double in unsaturated ?

Answer 15

Cis and Trans

Cis has a line on top whereas trans has a line sideways

Question 16

Saturated fatty acids

Answer 16

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

Question 17

Unsaturated fatty acids

Answer 17

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

Question 18

What can TAGS BE USED FOR ?

Answer 18

Energy storage .Which are metabolised in our bodies releasing twice as much energy as carbohydrates .

Question 19

What is the structure of Lipids composed of ?

Answer 19

Carbon/Hydrogen /phosphate

Question 20

How is Arthelosis caused ?

Answer 20

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.

Question 21

Hydrogenating vegetable oils

Answer 21

Produce saturated fats /unsaturated fats

Adding h20it can turn as trans resulting in trans fat

Question 22

What group is Carbohydrates part of ?

Answer 22

Oxygen