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Geomicorbiology > N redox states > Flashcards

N redox states Flashcards

1
Q

What is the change in redox state of Nitrification?

A

N oxidation

Oxidation of ammonia to nitrate

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2
Q

What is the change in redox state of N fixation?

A

N reduction.

Reduction of nitrogen gas to form ammonia

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3
Q

What is the change in redox state of denitrification?

A

N reduction.

reduction of nitrate to nitrogen gas

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4
Q

What is the change in redox state of nitrate assimilation?

A

N reduction.

Reduction nitrate to ammonia before uptake

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5
Q

What is the change in redox state of ammonium assimilation?

A

no change

organisms can take up ammonium directly

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6
Q

What is the change in redox state of ammonification?

A

no change.
formation of ammonia from OM e.g., during decomposition of OM. Organic matter (inc cells) have nitrogen in the reduced state, so turning from organic nitrogen to ammonium doesn’t change the oxidation state.

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Geomicorbiology (10 decks)

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