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Forwarded from Dr. Shaimaa MCQ
Forwarded from Dr. Shaimaa MCQ
----------------- is the precursor of the glycerol moiety in the synthesis of glycerol ether phospholipids
Anonymous Quiz
23%
Dihydroxyacetone
10%
Trihydroxyacetone phosphate
10%
monohydroxyacetone phosphate
10%
glycerol 1-phosphate
48%
Dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
------------------ is the precursor of the glycerol moiety in the synthesis of plasmalogens
Anonymous Quiz
15%
Dihydroxyacetone
10%
Trihydroxyacetone phosphate
10%
monohydroxyacetone phosphate
6%
glycerol 1-phosphate
58%
Dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
The ----------------- is the precursor of the glycerol moiety in the synthesis of platelet activating factor
Anonymous Quiz
9%
dihydroxyacetone
6%
trihydroxyacetone phosphate
7%
monohydroxyacetone phosphate
6%
glycerol 1-phosphate
72%
dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
Phospholipase A2 catalyzes the hydrolysis of glycerophospholipids to form a--------and lysophospholipid
Anonymous Quiz
8%
dihydroxyacetone
7%
trihydroxyacetone phosphate
57%
free fatty acid
11%
glycerol 1-phosphate
17%
dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
Lysophospholipid (eg, lysolecithin) is attacked by lysophospholipase, forming the corresponding glyceryl phosphoryl base, which may then be split by a hydrolase liberating ------------------ plus base.
Anonymous Quiz
49%
glycerol 3-phosphate
10%
trihydroxyacetone phosphate
26%
free fatty acid
9%
glycerol 1-phosphate
7%
dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
Long-chain saturated fatty acids are found predominantly in the 1 position of phospholipids
Anonymous Quiz
14%
3
32%
1
24%
2
26%
All of the above
4%
None of the above
Forwarded from Dr. Shaimaa MCQ
Forwarded from Dr. Shaimaa MCQ
- In the synthesis of ceramide, the ---------------- is required as a reductant in the 3-ketosphinganine reductase step
Anonymous Quiz
43%
NADPH
18%
NADH
9%
FADH2
25%
all the above
6%
none of the above
Forwarded from Dr. Shaimaa MCQ
Forwarded from Dr. Shaimaa MCQ
When ceramide reacts with phosphatidylcholine the products are -----------------plus diacylglycerol
Anonymous Quiz
14%
glycerol 3-phosphate
65%
sphingomyelin
9%
free fatty acid
5%
glycerol 1-phosphate
6%
dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
---------------- are synthesized from ceramide by the stepwise addition of activated sugars (eg, UDPGlc and UDPGal) and a sialic acid, usually N-acetylneuraminic acid.
Anonymous Quiz
19%
cerebrosides
22%
sphingomyelin
51%
Gangliosides
4%
glycerol 1-phosphate
5%
dihydroxyacetone phosphate
Forwarded from Dr. Shaimaa MCQ
------------------- are the major energy-storing lipids
Anonymous Quiz
7%
phosphoglycerols
15%
glycosphingolipids
13%
Gangliosides
9%
sphingomyelin
56%
Triacylglycerols
Forwarded from Dr. Shaimaa MCQ
1
Forwarded from Dr. Shaimaa MCQ
Triacylglycerols and some phosphoglycerols are synthesized by progressive acylation of -------------------
Anonymous Quiz
6%
glycerol-5-phosphate
6%
glycerol-4-phosphate
66%
glycerol-3-phosphate
19%
all the above
3%
none of the above
Forwarded from Dr. Shaimaa MCQ
Dipalmitoyl lecithin is a major component of lung surfactant, which is lacking in respiratory distress syndrome of the newborn.
Anonymous Quiz
49%
False
51%
True
Forwarded from Dr. Shaimaa MCQ
Inositol phospholipids in the cell membrane act as precursors of hormone second messengers
Anonymous Quiz
84%
True
16%
False
👍1
Forwarded from Dr. Shaimaa MCQ
Platelet activating factor is an alkylphospholipid
Anonymous Quiz
81%
True
19%
False
Forwarded from Dr. Shaimaa MCQ
Glycosphingolipids, containing sphingosine and sugar residues as well as fatty acid that are found in the outer leaflet of the plasma membrane with their oligosaccharide chains facing outward, form part of the glycocalyx of the cell surface
Anonymous Quiz
90%
True
10%
False
Forwarded from Dr. Shaimaa MCQ
After hydrolysis (lipolysis) of triacylglycerol, the utilization of glycerol depends upon whether the tissues have the enzyme glycerol kinase
Anonymous Quiz
92%
True
8%
False