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Nitrogen Fixation and Photosynthesis

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

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

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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
The chief source of nitrogen for green plants is

nitrates
ammonium salts
atmospheric nitrogen
low molecular weight- organic nitrogenous compound

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Nitrogen Fixation and Photosynthesis
Which of the following bacteria genus is capable of oxidizing ammonia (NH4)?

Nitrosococcus
Nitrosobacter
Nitrospina
Nitrobacter

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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
In the presence of carbon monoxide, nitrogen fixation

inhibits
none of these
increases
decreases

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