Chapter 26: Lipids

Question 1

C₁₆H₃₂O₂
16:0

Answer 1

Palmitic acid

Question 2

C₁₈H₃₆O₂
18:0

Answer 2

Stearic acid

Question 3

C₁₆H₃₀O₂
16:1

Answer 3

Palmitoleic acid

Question 4

C₁₈H₃₄O₂
18:1

Answer 4

Oleic acid

Question 5

C₁₈H₃₂O₂
18:2

Answer 5

Linoleic acid

Question 6

Common site of fat autooxidation

Answer 6

An allylic position to a double bond

Question 7

Transesterification of triglycerides

Answer 7

Reagents

[H⁺] & Excess MeOH

Question 8

Alkoxy group of cephalins

Answer 8

Derived from ethanolamine

Question 9

Alkoxy group of lecithins

Answer 9

Derived from choline

Question 10

Answer 10

Lecithin

Question 11

Answer 11

Cephalin

Question 12

Steroid backbone

Answer 12

A tetracyclic ring composed of 17 carbons arranged as three six-carbon rings fused to one five-carbon ring

Question 13

Biological precursor of steroids

Answer 13

Squalene

Question 14

Prostaglandin structure

Answer 14

Contain 20 carbon atoms arranged as a 5-member ring with two side chains

Question 15

Eicosanoids

Answer 15

A class of compounds derived from arachidonic acid

Prostaglandins belong to this class

Question 16

Terpenes

Answer 16

Assembled from 5-carbon isoprene units

The number of carbon atoms therefore must be a multiple of 5

Question 17

Monoterpene

Answer 17

Composed of 10 carbon atoms

Question 18

Sesquiterpene

Answer 18

Composed of 15 carbon atoms

Question 19

Diterpene

Answer 19

Composed of 20 carbon atoms

Question 20

Triterpene

Answer 20

Composed of 30 carbon atoms

Question 21

Tetraterpene

Answer 21

Composed of 40 carbon atoms