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Nitrogen Fixation and Photosynthesis

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

carbon dioxide
organic compounds
elementary carbon
none of these

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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?

Algae
Bacteria
Nematodes
Moulds

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Nitrogen Fixation and Photosynthesis
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2?

Erythrose-4-phosphate
Ribose-5-phosphate
Alpha-ketoglutarate
Ribulose-l,5-diphosphate

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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

12 ATP
25 ATP
18 ATP
7 ATP

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

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

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Nitrogen Fixation and Photosynthesis
Chlorophyll is associated with

stroma
thylakoids
matrix
cristae

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