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Nitrogen Fixation and Photosynthesis

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

Malate
Oxaloacetate
Pyruvate
Alpha-ketoglutarate

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

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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

25 ATP
18 ATP
7 ATP
12 ATP

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

decreases
none of these
increases
inhibits

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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
Which of the following bacteria genus is capable of oxidizing ammonia (NH4)?

Nitrosococcus
Nitrospina
Nitrobacter
Nitrosobacter

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