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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2?

Ribose-5-phosphate
Ribulose-l,5-diphosphate
Alpha-ketoglutarate
Erythrose-4-phosphate

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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 aid plants in the acquisition of nitrogen from nitrogen gas of the atmosphere?

Nematodes
Moulds
Algae
Bacteria

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Nitrogen Fixation and Photosynthesis
What type of long chain alcohol is esterified to plant chlorophyll molecules?

Phytol
None of these
Dolichol
Farnesol

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

ammonia
nitrogen
none of these
urea

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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

12 ATP
18 ATP
7 ATP
25 ATP

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