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Nitrogen Metabolism

Nitrogen Metabolism
The nitrogen atoms of urea produced in the urea cycle are derived from

nitrate
ammonia
nitrite
ammonia and aspartic acid

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Nitrogen Metabolism
Which of the following amino acid do not fall under the category of essential amino acid?

Glycine
Methionine
Histidine
Leucine

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Nitrogen Metabolism
Urea cycle converts

ammonia into a less toxic form
ketoacids into amino acids
amino acids into ketoacids
none of these

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Nitrogen Metabolism
How many molecules of ATP are hydrolysed to form two molecule of ammonia?

15
5
16
10

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Nitrogen Metabolism
Which of the following is used as carbon atom source while producing urea in the urea cycle?

Glucose
Carbon dioxide
Arginine
Aspartic acid

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Nitrogen Metabolism
Nitrate reduction can be carried out by

only plants
only microorganism
plant and microorganism
none of these

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