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Nitrogen Fixation and Photosynthesis

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

organic compounds
carbon dioxide
none of these
elementary carbon

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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
Nematodes
Algae

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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
Erythrose-4-phosphate
Alpha-ketoglutarate
Ribose-5-phosphate

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Nitrogen Fixation and Photosynthesis
Organisms capable of converting N2 to NO3 are

bacteria
moulds
yeasts
roundworms

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Nitrogen Fixation and Photosynthesis
Which of the following molecule is produced from the fixation of CO2 in C4 plants?

Alpha-ketoglutarate
Oxaloacetate
Pyruvate
Malate

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

heterotrophic
prokaryotic
autotrophic
photosynthetic

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