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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
Plants absorb nitrates from soil and convert them into

urea
none of these
nitrogen
ammonia

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

heterotrophic
photosynthetic
prokaryotic
autotrophic

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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 bacteria genus is capable of oxidizing ammonia (NH4)?

Nitrobacter
Nitrosococcus
Nitrospina
Nitrosobacter

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

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

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Nitrogen Fixation and Photosynthesis
A group of about 300 chlorophyll molecule acting together to trap photons and transfer energy to the pigment molecule at the reaction center may be called as

chloromass
harvesting unit
reaction center
photosynthetic unit

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