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Nitrogen Fixation and Photosynthesis

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

25 ATP
12 ATP
7 ATP
18 ATP

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

none of these
carbon dioxide
elementary carbon
organic compounds

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

yeasts
roundworms
moulds
bacteria

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Nitrogen Fixation and Photosynthesis
The chief source of nitrogen for green plants is

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

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

none of these
ammonia
urea
nitrogen

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

Pyruvate
Oxaloacetate
Alpha-ketoglutarate
Malate

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