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Flashcards in lipids Deck (25)
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1

what are the properties of lipids

insoluble in water

2

what are lipids made of

carbon, hydrogen and oxygen

3

lipids are one of the four classes of.............

macromolecules

4

describe what is meant by a saturated fatty acid

linked by only single bonds so every carbon atom has made 4 bonds and they are 'saturated' in hydrogenslinear so pack closely

5

what do saturated acids form and give examples

solidsanimal fats - fat on meat, butter, lard

6

describe what is meant by unsaturated fatty acids

double bonds between carbon atoms forms kinks in molecules

7

what is polyunsaturated

2 or more double bonds

8

what is meant by monounsaturated

one double bond

9

what bonds form between monoglycerides

ester bonds

10

what do unsaturated fatty acids form

liquidsplant oils

11

what is triglyceride

glycerol and 3 fatty acids with ester bonds

12

what is a phospholipid

one glycerol with a phosphate group and two fatty acids with ester bonds

13

how can polyglycerides be broken down

hydrolysis

14

what does LDL stand for

low density lipoproteins

15

what does LDL cholesterol in the body do

deposits cholesterol

16

is LDL good for you

too much is bad

17

what does HDL stand for

high density lippoproteins

18

what does HDL do

transports cholesterol to liver and removes it

19

what does a diet high in saturated fats lead to

more LDL production

20

what does a diet high in unsaturated fats lead to

more HDL production

21

what does CHD stand for

coronary heart disease

22

what causes CHD

high blood pressure and smoking which damages the cells lining the artery wallsa build up of LDL in coronary arteries

23

what does artheromas mean

raised patches of plaque that solidifies and narrows the arteries

24

what does narrowing of the arteries cause

inhibits nutrient delivery raises blood pressure

25

how can you test for a lipid

1ml of unknown substance and 1ml of ethanol with equal amounts waterif a white emulsion is formed its a lipid