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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
Nitrosomonous and Nitrobacter obtain their carbon for growth from

elementary carbon
organic compounds
carbon dioxide
none of these

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Nitrogen Fixation and Photosynthesis
An organism that relies exclusively on pre-synthesized food molecules is

prokaryotic
heterotrophic
photosynthetic
autotrophic

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Nitrogen Fixation and Photosynthesis
During nitrogen fixation the enzyme nitrogenase catalyse the reaction. The reaction is high energy demanding which require approximately

25 ATP
7 ATP
18 ATP
12 ATP

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Nitrogen Fixation and Photosynthesis
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2?

Ribulose-l,5-diphosphate
Ribose-5-phosphate
Alpha-ketoglutarate
Erythrose-4-phosphate

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Nitrogen Fixation and Photosynthesis
What type of long chain alcohol is esterified to plant chlorophyll molecules?

Phytol
None of these
Farnesol
Dolichol

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Nitrogen Fixation and Photosynthesis
What is the metal ligand in chlorophylls?

Iron (Fe)
Magnesium (Mg)
Manganese (Mn)
Copper (Cu)

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