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Nitrogen Fixation and Photosynthesis

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

elementary carbon
carbon dioxide
none of these
organic compounds

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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
Nematodes
Algae
Moulds

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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
7 ATP
25 ATP
12 ATP

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Nitrogen Fixation and Photosynthesis
Organisms capable of converting N2 to NO3 are

bacteria
yeasts
moulds
roundworms

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

heterotrophic
prokaryotic
autotrophic
photosynthetic

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

Nitrobacter
Nitrosobacter
Nitrosococcus
Nitrospina

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