LIPIDS

Question 1

insoluble in water but soluble in non polar solvents

Answer 1

Lipids

Question 2

hydrolysis reaction that occurs in basic solution

Answer 2

saponification reaction

Question 3

long chain fatty acids

Answer 3

C12 - C26

Question 4

Medium chain fatty acids

Answer 4

C8 - C10

Question 5

Short chain fatty acids

Answer 5

C4 - C6

Question 6

5 categories chem function of lipids

Answer 6

energy storage
membrane
emulsification
messenger lipids
protective lipids

Question 7

increases as no. of double membrane increases

Answer 7

bonds of fatty acids

Question 8

most widespread energy storage material

Answer 8

Carbohydrate glycogen

Question 9

major energy storage material

Answer 9

triacylglycerol

Question 10

products of hydrolysis of an oil are 3 fatty acids &

Answer 10

Glycerol

Question 11

triester w 3 identical fatty acids

Answer 11

Simple triacylglycerol

Question 12

formed w more than 1 kind of fatty acid molecule

Answer 12

Mixed triacylglycerol

Question 13

saponifiable/nonsaponifiable system for lipids is based on

Answer 13

lipid behaviour in basic solution

Question 14

double bond present in monounsaturated fatty acid almost always IN A:

Answer 14

is in a cis-configuration

Question 15

how many structural sub units are present in block diagram for triacylglycerol

Answer 15

4

Question 16

how many ester linkages are present in triacylglycerol molecule

Answer 16

3

Question 17

unsaturated fatty acids residues are structural components of:

Answer 17

both fats and oil

Question 18

good fat

Answer 18

monosaturated fat

Question 19

bad fat

Answer 19

saturated fat

Question 20

omega 6
omega 3

Answer 20

linoleic (18:2)
linolenic (18:3)

Question 21

starting material for biosynthesis of arachidonic acid

Answer 21

linoleic acid

Question 22

starting material for eicosanoids & regulate blood pressure/clotting

Answer 22

Arachidonic acid

Question 23

starting material for biosynthesis for 2 additional omega 3 fatty acid

Answer 23

linolenic acid

Question 24

communication & brain development

Answer 24

EPA & DHA

Question 25

skin redness ; infection & dehydration ; liver abnormalities

Answer 25

deficiency of linoleic and linolenic acid

Question 26

nuts can protect us from:

Answer 26

coronary heart disease

Question 27

3 FATTY ACIDS REMOVED

Answer 27

complete hydrolysis

Question 28

hydrolysis in basic solution

Answer 28

saponification

Question 29

The type of reaction that will increase the melting point of fat or oil

Answer 29

hydrogenation

Question 30

products by partial hydro

Answer 30

peanut oil - peanut butter liquid plant oil - margarine

Question 31

double bonds in triacylglycerols ; c= c breakage

Answer 31

Oxidation

Question 32

% mass of cell membrane

Answer 32

80% phospholipids

Question 33

1/more fatty acids, phosphate groups, platform molecule

Answer 33

phospholipids

Question 34

2 fatty acids ; alcohol esterified w phosphate group w glycerol

Answer 34

Glycerophospholipids

Question 35

attached alcohols of glycerolip

Answer 35

Choline Ethanalomine Serine

Question 36

important structural components of myelin sheath of neuron ; sphingomyelins

Answer 36

Choline

Question 37

simplest shingoglyco occur in brain ; 1 monosacch

Answer 37

Cerebrosides

Question 38

complex sphingoglyco ; occur in gray matter of brain

Answer 38

Gangliosides

Question 39

steroid; fused ring (3 - 6 membered rings ; 1 - 5 memebered ring)

Answer 39

Cholesterol

Question 40

regulate membrane fluidity

Answer 40

cholesterol

Question 41

transport: use of diffusion

Answer 41

passive

Question 42

transport: use of membrane protein ; no energy

Answer 42

facilitated energy

Question 43

against concentation gradient ; uses energy

Answer 43

Active

Question 44

Emulsification lipids

Answer 44

Bile acids

Question 45

stabilizing water insoluble as particles in aqueous solution

Answer 45

emulsifier

Question 46

cholesterol derivative ; makes lipids soluble

Answer 46

Bile acid

Question 47

Messenger lipids; derivative of cholesterol

Answer 47

steroid hormones

Question 48

derivative of fatty acids

Answer 48

eicosanoids

Question 49

control balance of na & k ions in cells

Answer 49

Mineralocorticoids

Question 50

metabolic precursor for production of eicosanoids

Answer 50

arachidonic acid

Question 51

3 types of eicosanoids

Answer 51

Prostaglandins thromboxane leukotriene

Question 52

contains cylcopentane ring & oxygen containing

Answer 52

Prostaglandin

Question 53

secretion of gastric layer * mucus to stomach relax & contracting smooth muscle water and electrolyte balance

Answer 53

Prostaglandin

Question 54

has cyclic ether ring & oxygen groups

Answer 54

thromboxane

Question 55

has 3 conjugated double bonds & hydroxy groups

Answer 55

Leukotriene

Question 56

platelet aggregation

Answer 56

Thromboxane

Question 57

Promote allergy responses

Answer 57

Leukotriene

Question 58

oxidation of fats & oils: which part of mol is attacked by oxidizing agent

Answer 58

carbon- carbon double bonds

Question 59

In what type of lipid are two ester linkages and one amide linkage present?

Answer 59

sphingophospholipids

Question 60

are fatty acids rarely found in the free state in nature?

Answer 60

YES

Question 61

What are the expected products when a fat undergoes saponification?

Answer 61

glycerol & fatty acid salts

Question 62

The effect of partial hydrogenation of a fat or oil is

Answer 62

decrease in the degree of fatty acid unsaturation