F.A/Lipids

Question 1

T/F: All natural F.A. are cis

Answer 1

True

Question 2

Linolenic is O()
Linoleic is O()

Answer 2

• 3
• 6

Question 3

T/F: CBHY are more efficient at energy than TG

Answer 3

False

Question 4

T/F: TG content is mainly LDL

Answer 4

False. It is 60% VLDL

Question 5

Role of each:
1- CM
2- VLDL
3- LDL
4- HDL

Answer 5

1- exo cholesterol to liver and TG to extrahepatic tissues
2- TG in circulation to all tissues
3- Cholesterol to cells
4- Excess cholesterol from cells to liver

Question 6

T/F: The more TG we have on a lipoprotein the more dense it is

Answer 6

False. The less dense

Question 7

2 classes of conjugated lipids are _, _
Where is each found?

Answer 7

PL in membranes
SPL in CNS/brain

Question 8

4 products from phosphatidic acid are

Answer 8

• PA + serine>PS esterification
• PS > PEA decarboxylation
• PEA > PC SAM trimethyl
• PA + inositol > PI

Question 9

Another name for PS and PEA

Answer 9

Cephalins

Question 10

Ceramide composed of

Answer 10

F.A(very long) + sphingosine

Question 11

4 types of SPL

Answer 11

Cerebrosides: Ceramide + terminal OH glycosylated
Globosides: Cer + di/trisacch
Gangliosides: Cer + CBHY’s + NANA
Sphingomyelin: Cer + PC/PS

Question 12

Gangliosides _ and _

Answer 12

receptor of cholera, acidic

Question 13

T/F: All SPL contain phosphate

Answer 13

False. Only sphingomyelin

Question 14

Bonds in PL and SPL

Answer 14

PL: Ester
SPL: Amide