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Nitrogen Fixation and Photosynthesis

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

elementary carbon
organic compounds
none of these
carbon dioxide

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

prokaryotic
photosynthetic
heterotrophic
autotrophic

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Nitrogen Fixation and Photosynthesis
Which of the following bacteria genus is capable of oxidizing ammonia (NH4)?

Nitrobacter
Nitrosococcus
Nitrosobacter
Nitrospina

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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
7 ATP
18 ATP
12 ATP

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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
Algae
Nematodes

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

iron
calcium
sulphur
nitrogen

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