Reaction of ketoglutaric acid with ammonia to form glutamic acid is

Oxidative amination

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Reductive amination

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Transamination

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Ammonification

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Solution

The correct option is B Reductive amination
Reductive amination is a way by which ammonium ions is assimilated to form amino acids in plants. In this reaction, in the presence of enzyme glutamate dehydrogenase, ammonium ion directly combines with alpha-ketoglutaric acid, to form glutamic acid (amino acid) and for this to happen, a reduced coenzyme (NADPH) is required.
So the correct answer is 'Reductive amination'.

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