2.15 SAPONIFIABLE AND NON SAPONIFIABLE LIPIDS

Question 1

● is a lipid that undergoes hydrolysis in basic solution to yield two or more smaller product molecules.

Answer 1

Saponifiable Lipids)

Question 2

● five types of saponifiable lipid

Answer 2

(triacylglycerols, glycerophospholipids, sphingophospholipids, sphingoglycolipids, and waxes)

Question 3

● a lipid that does not undergo hydrolysis in basic solution

Answer 3

nonsaponifiable lipid)

Question 4

● four types of nonsaponifiable

Answer 4

cholesterol, bile acids, steroid hormones, and eicosanoids)

Question 5

● What determines whether or not a lipid is saponifiable?

Answer 5

[ It is the types of linkages (bonds) that hold its component parts (building blocks)]

Question 6

● Three types of linkages

Answer 6

[(1) ester linkages (2) amide linkages and (3) glycosidic linkages

Question 7

● Triacylglycerol

Answer 7

three ester linkage)

Question 8

● Glycerophospholipid

Answer 8

four ester linkages)

Question 9

● Sphingophospholipid

Answer 9

one amide and two ester linkages)

Question 10

● Sphingoglycolipid

Answer 10

one amide, one ester, and one glycosidic linkage

Question 11

● Biological waxes

Answer 11

one ester linkage

Question 12

● Structurally, these nonsaponifiable lipids have two things in common

Answer 12

(only one building block is present and
there is no need for ester, amide, or glycosidic linkages to be present to link building blocks together since there is only one building block.)

Question 13

1. In which of the following pairs of lipid types are both members of the pair classified as saponifiable lipids?

Answer 13

• triacylglycerols and biological waxes

Question 14

2. How many building blocks are present in the block diagram structure of a non saponifiable lipid

Answer 14

• one

Question 15

3. Which of the following statements concerning bond breaking that occurs under saponification conditions is incorrect?

Answer 15

• no correct response