lipids

Question 1

predominant for storage role.

Answer 1

triglycerides

Question 2

predominant for membrane function

Answer 2

Phospholipids

Question 3

fatty acids with no double bonds - maximum hydrogen attached.

Answer 3

saturated

Question 4

containing double bonds - fewer hydrogen attached.

Answer 4

unsaturated

Question 5

both hydrogen on the same side. Low melting point.

Answer 5

cis conformation

Question 6

hydrogen on opposite sides.

Answer 6

trans conformation

Question 7

Fatty acids with more than one double bond

Answer 7

polyunsaturated

Question 8

fatty acids in mammals are in the form of

Answer 8

triacylglycerol

Question 9

Three fatty acids esterified to a glycerol backbone.

Answer 9

triacyglycerol

Question 10

(fat cells) hydrophobicity is an advantage because it excludes water, reducing the overall weight of this.

Answer 10

adipocytes

Question 11

saturated fatty acid chains tend to form a solid phase. Deposits near the organ.

Answer 11

visceral fat

Question 12

less saturated chains are found in deposits beneath the skin.

Answer 12

subcutaneous fat

Question 13

even more unsaturated triacylglycerides found in seed lipids.

Answer 13

oils

Question 14

All C bonded to H.
No C=C double bonds.

Answer 14

saturated fats

Question 15

most animal fats and butter.
solid at room temperature.

Answer 15

saturated fats

Question 16

-At least one C=C double bond.
-plant & fish fats, vegetable oils.
-liquid at room temperature.

Answer 16

unsaturated fats

Question 17

Water-repelling solids. Protective coating.

Answer 17

waxes

Question 18

-Solid at room temperature.
-Insoluble in water.
-Protective covering for animals and plants.

Answer 18

waxes

Question 19

Most common polar lipids (amphiphiles)

Answer 19

phospholipids

Question 20

having both polar and nonpolar affinities in the same molecule.

Answer 20

amphiphiles

Question 21

Principal components of the cell membrane.

Answer 21

phospholipids

Question 22

Resemble triacylglycerol - except the 3rd position of the glycerol is esterifies to phosphate.

Answer 22

phospholipids

Question 23

commonly occurring phospholipid (in mammals).

Answer 23

phosphatidylcholine

Question 24

Phosphate group, an ester formed with glycerol.

Answer 24

diester

Question 25

ester if formed with alcohol.

Answer 25

choline

Question 26

common types of phospholipids

Answer 26

Phosphatidylethanolamine (common)
Phosphatidylinositol (common)

Question 27

Best example of steroids.

Answer 27

cholesterol

Question 28

a class of lipids having fused, flat rings.

Answer 28

steroids

Question 29

example of steroids

Answer 29

Testosterone, Aldosterone, Estradiol

Question 30

Amphipathic molecules must satisfy two conflicting natures simultaneously:

Answer 30

water solubility and
lipid solubility.

Question 31

two forms that achieve this balance (water and lipid solubility)

Answer 31

micelles and liposomes

Question 32

examples of micelles

Answer 32

fatty acid in water