LIPIDS

Question 1

FUNCTIONS OF LIPIDS

Answer 1

thermal regulation, protection from mechanical shock, store and furnish chemical energy, store excess calories

Question 2

Defining parameter

Answer 2

SOLUBILITY

Question 3

Energy storage lipids

Answer 3

triacylglycerol

Question 4

Membrane lipids

Answer 4

– sphingoglycolipids, phospholipid, cholesterol

Question 5

Emulsification lipids

Answer 5

bile acid

Question 6

Messenger lipids

Answer 6

steroid, eicosanoid

Question 7

Protective-coating lipids

Answer 7

biological waxes (floor waxes, cosmetic waxes)

Question 8

• Converted into smaller molecules when hydrolysis occurs. Except cholesterol.

Answer 8

Saponification lipids 125

Question 9

• Cannot be broken into smaller units since they do not react with water. There is no hydrolysis that results in no smaller units.

Answer 9

Non-saponification lipids 34

Question 10

Simple lipids

Answer 10

(fats and waxes)

Question 11

Complex lipids

Answer 11

phospholipids, glycolipids, lipoproteins

Question 12

CLASSIFICATION BY STRUCTURE

Answer 12

SIMPLE, COMPLEX, STEROIDS, Prostaglandins, thromboxanes, leukotrienes.

Question 13

Long-chain

Answer 13

(C<12 12-26 insoluble)

Question 14

Medium-chain

Answer 14

(C8-10)

Question 15

Short-chain

Answer 15

(C2-6 slightly/ marginally soluble)

Question 16

4-24 C atoms/ straight chain compounds.

Answer 16

Dietary F.A

Question 17

TF Carbon chain and water solubility is inversely proportional

Answer 17

T

Question 18

more liquid at room temperature

Answer 18

UFA

Question 19

Melting point and size of the carbon is inversely proportional

Answer 19

F

Question 20

Do not contain glycerol but contain long-chain

amino alcohol sphingosine

Answer 20

SPHINGOLIPIDS

Question 21

Triester of glycerol and long chain of carboxylic acids

called fatty acids.

Answer 21

TRIGLYCERIDES

Question 22

Amino group of sphingosine can from an amide

bond with a FA carboxyl

Answer 22

Sphingolipids

Question 23

consist of one fatty acid linked to the

amino group of sphingosine by an amide bond

Answer 23

Ceramides-

Question 24

– Common constituents of plasma

membranes

Answer 24

Sphingomyelin

Question 25

Animal fats and plant oils

Answer 25

TRIGLYCERIDES

Question 26

Component of biological membrane

Answer 26

Phosphoacylglycerols (phospholipids)

Question 27

Lipid that is a monoester of long-chain carboxylic acids | and long chain alcohols

Answer 27

Waxes

Question 28

Often found as markers on cell membranes and play a large role in tissue and organ specificity

Answer 28

Gangliosides

Question 29

Major role in regulation of calcium and | phosphorus metabolism

Answer 29

Vitamin D

Question 30

A fused-ring containing 3 six membered rings and 1 five membered ring (steroid nucleus)

Answer 30

Steroids

Question 31

TF Phospholipid membranes with low conc. of cholesterol have a fluidity intermediate between crystal and crystal state

Answer 31

F

Question 32

Messenger lipid; oxygenated C20 fatty acid | derivative

Answer 32

Eicosanoids

Question 33

plays a crucial role in vision | when it is bound to a protein called

Answer 33

opsin

Question 34

Metabolic precursor is arachidonic acid

Answer 34

Prostaglandins