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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
An organism that relies exclusively on pre-synthesized food molecules is

prokaryotic
photosynthetic
autotrophic
heterotrophic

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

Oxaloacetate
Malate
Alpha-ketoglutarate
Pyruvate

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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?

Bacteria
Moulds
Nematodes
Algae

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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
12 ATP
7 ATP

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

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

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Nitrogen Fixation and Photosynthesis
A major plant macronutrient found in nucleic acids and proteins is

sulphur
iron
calcium
nitrogen

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