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Biotechnology Objective Questions {  Nitrogen Fixation and Photosynthesis }



8. In the presence of carbon monoxide, nitrogen fixation
A.increases
B.decreases
C.inhibits
D.none of these
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9. An organism that relies exclusively on pre-synthesized food molecules is
A.autotrophic
B.photosynthetic
C.prokaryotic
D.heterotrophic
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10. In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2?
A.Erythrose-4-phosphate
B.Ribulose-l,5-diphosphate
C.Ribose-5-phosphate
D.Alpha-ketoglutarate
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11. A major plant macronutrient found in nucleic acids and proteins is
A.calcium
B.nitrogen
C.sulphur
D.iron
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12. What is the metal ligand in chlorophylls?
A.Copper (Cu)
B.Iron (Fe)
C.Magnesium (Mg)
D.Manganese (Mn)
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13. Nitrosomonous and Nitrobacter obtain their carbon for growth from
A.organic compounds
B.carbon dioxide
C.elementary carbon
D.none of these
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14. Chlorophyll is associated with
A.thylakoids
B.stroma
C.cristae
D.matrix
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