Download 4. Essential fatty acid

1. An example of a
saturated fatty acid is
(A)Palmitic acid
(B)Oleic acid
(C) Linoleic
(D) arachidonic acid
2. If the fatty acid is
esterified with an alcohol of
high molecular weight (long
chain) instead of glycerol, the
resulting compound is
(A) Lipositol
(B) B) Plasmalogen
(C) Wax
(D) Cephalin
3-A fatty acid which is not
synthesized in the body and has
to be supplied in the diet is
(A)Palmitic acid
(B) stearic acid
(C) Linolenic acid
(D) Butyric acid
4. Essential fatty acid:
(A)Linoleic acid
(B) Linolenic acid
(C) Arachidonic acid
(D) All these
5. The number of double
bonds in arachidonic acid
is
(A) 1
(B) 2
(C) 4
(D) 6
6. In humans, a dietary
essential fatty acid is
(A)Palmitic acid
(B) Stearic acid
(C) Oleic acid
(D) Linoleic acid
7. A lipid containing an
amino alcohol is
(A) Phosphatidic acid
(B) Lecithin
(C) cardiolipin
D) Sphingomyelin
8. Cephalin consists of all the following
except
(A) Glycerol, fatty acids, phosphoric acid
and choline
(B) Glycerol, fatty acids, phosphoric acid
and ethanolamine
(C) Glycerol, fatty acids, phosphoric acid
and inositol
(D) Glycerol, fatty acids, phosphoric acid
and serine
9. In mammals, the major fat in
adipose tissues is
(A)Phospholipid
(B) Cholesterol
(C) Sphingolipids
(D) Triacylglycerol
10. Glycosphingolipids are a
combination of
(A) Ceramide with one or more sugar
residues
(B) Glycerol with galactose
(C) Sphingosine with galactose
(D) Sphingosine with phosphoric acid
11. Phospholipid acting as lung
surfactant is
(A)Cephalin
(B) Phosphatidyl inositol
(C) Lecithin
(D) Phosphatidyl serine
12. Dietary fats after
absorption appear in the
circulation as
(A)HDL
(B) VLDL
(C) LDL
(D) Chylomicron
13. Free fatty acids are
transported in the blood
(A) Combined with albumin
(B) Combined with fatty acid
binding protein
(C) Combined with β -lipoprotein
(D) In unbound free salts
14. Triglycerides are
transported from liver to
extrahepatic tissues by
(A)Chylomicrons
(B) VLDL
(C) HDL
(D) LDL
15. Cholesterol is transported
from liver to extrahepatic
tissues by
(A)Chylomicrons
(B) VLDL
(C) HDL
(D) LDL
16. Elevated plasma level
of the following protects
against atherosclerosis:
(A)Chylomicrons
(B) VLDL
(C) HDL
(D) LDL
17. Which of the following
can be synthesized in the
human body if precursors
are available?
(A)Oleic acid
(B) linoleic acid
(C) Arachidonic acid
(D) All of these
18. In glycerophospholipids, a
polyunsaturated fatty acid is
commonly attached to which
of the following carbon atom
of glycerol?
(A) Carbon 1
(B) Carbon 2
(C) Both (A) and (B)
(D) None of these
19. Lysolecithin is formed from
lecithin by removal of
(A) Fatty acid from position 1
(B) Fatty acid from position 2
(C) Phosphorylcholine
(D) Choline
20. A digestive secretion
that does not contain any
digestive enzyme is
(A)Saliva
(B) Gastric juice
(C) Pancreatic juice
(D) Bile
21. Plasma becomes milky
(A) Due to high level of HDL
(B) Due to high level of LDL
(C) During fasting
(D) After a meal
• 22. Cholesterol is the
precursor for the
biosynthesis of
• (A) essential fatty acids
• (B) prostaglandins
• (C) bile acids
• (D) sphingmyelin
23. Cerebrosides are composed of
(A)Sphingosine, fatty acids, glycerol
and phosphoric acid
(B) Sphingosine, fatty acids, galactose
(C) Glycerol, fatty acids, galactose
(D) Glycerol, fatty acids, galactose,
sphingol
24. The class of lipoproteins
having a beneficial effect in
atherosclerosis is
(A) Low density of lipoproteins
(B) very low density lipoproteins
(C) High density lipoproteins
(D) Chylomicrons
25. A fatty acid not
synthesized in man is
(A) Oleic
(B) Palmitic
(C) Linoleic
(D) Stearic
26- These chemical substances
contain:
a- a long hydrocarbon chain
b- a steroid nucleus
c- a pentose sugar
d- a benzene ring
1. What
Vit.
Vit.
Vit.
Vit.
are the deficiency symptoms of:
A
E
K
D
2-What is the physiological importance
of Calcium ?
3-What is the physiological importance
of vitamin D?
4. What are the antioxidant vitamins
5- What are the types and functions
of adrenocortical hormones?
6-Enumerate 4 types of phospholipids enter
in structure of cell membranes