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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
In the presence of carbon monoxide, nitrogen fixation

decreases
none of these
increases
inhibits

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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

7 ATP
25 ATP
18 ATP
12 ATP

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Nitrogen Fixation and Photosynthesis
Plants absorb nitrates from soil and convert them into

urea
nitrogen
none of these
ammonia

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Nitrogen Fixation and Photosynthesis
Which of the following aid plants in the acquisition of nitrogen from nitrogen gas of the atmosphere?

Moulds
Bacteria
Algae
Nematodes

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

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

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

autotrophic
prokaryotic
heterotrophic
photosynthetic

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