2. fad2 gene locus is involved in desaturation of (a) 16:1 (b) 18:1 (c) 18:2 (d) 18:3
3. fad A gene is involved in desaturation of (a) 16:0-MGD (b) 16:0 - PG (c) 18:1- PG (d) none
4. The substrate for desaturase encoded by fad D gene is (a) 16:1-PG (b) 16:1-MGD (c) a + b
(d) 18:2 - PG
5. Whose gene product yields a unique FA ? (a) fad A (b) fad B (c) fad C (d) fad D
6. Which is not a substrate for fad C ? (a) 18:1-PG (b) 18:1-MGD (c) 16:1-MGD (d) 16:1-PG
7. SL derived from eukaryotic pathway has ________ in sn -1 position .
(a) 18:1 (b) 16:0 (c) a or b (d) 18:2
8. The most frequent intermediate in the TWO-PATHWAY scheme for glycerolipid biosynthesis is
(a) PG (b) DAG (c) MGD (d) PC
9. Which glycerol lipid is found in highest percentage in plants ?
(a) PC (b) MGD (c) DGD (d) DAG
10. The enzyme that determines cold tolerance or sensitivity of a plant is
(a) Acyl-ACP:G-3-P acyltransferase (b) Acyl-ACP:lyso-PA acyltransferase
(c) 18:1-PC desaturase (d) All wrong
11. The elongation of fatty acid follows (a) CoA track (b) ACP track (c) a+b (d) None
12. The conclusion that Stearoyl-ACP dasaturase is highly conserved in plant kingdom is based on
(a) high degree of identity in protein sequence (b) high degree of identity in DNA sequence
(c) high degree of identity of cDNA sequence (d) high degree of identity of mRNA sequence
13. Absence of PC in chloroplast is due to
(a) The enzyme CDP-choline: DAG cholinephosphotransferase (A) is not present in chloroplast
(b) Enzyme A is very specific for sn-2 18:1- DAG (c) a or b (d) All wrong
14. The target lipid for analyzing fatty acid composition during temperature fluctuation is
(a) MGD (b) PC (c) PG (d) SL
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