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Nitrogen Fixation and Photosynthesis

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

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

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

none of these
organic compounds
carbon dioxide
elementary carbon

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

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

nitrogen
urea
none of these
ammonia

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

inhibits
none of these
decreases
increases

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

bacteria
moulds
roundworms
yeasts

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