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Nitrogen Fixation and Photosynthesis

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

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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
Algae
Bacteria
Nematodes

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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

18 ATP
25 ATP
12 ATP
7 ATP

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

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

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Nitrogen Fixation and Photosynthesis
Chlorophyll is associated with

cristae
matrix
thylakoids
stroma

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