NITROGEN METABOLISM QUIZ

The inputs to one cycle of the urea cycle are

1 molecule of urea, 1 molecule of ammonia, 3 molecules of ATP and 1 molecule of fumaric acid

None of these

1 molecule of fumaric acid, 1 molecule of urea, 3 molecules of AMP

1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of carbon dioxide, 3 molecules of ATP

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Glucose

Aspartic acid

Carbon dioxide

Arginine

TRUE ANSWER : ?
YOUR ANSWER : ?

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

nitrate

ammonia and aspartic acid

nitrite

ammonia

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Leucine

Glycine

Histidine

Methionine

TRUE ANSWER : ?
YOUR ANSWER : ?

The products of urea cycle are

1 molecule of urea, 1 molecule of ammonia, 1 molecule of ATP and 1 molecule of fumaric acid

None of these

1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP

1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of fumaric acid, 1 molecule of ATP

TRUE ANSWER : ?
YOUR ANSWER : ?

Urea cycle converts

none of these

ammonia into a less toxic form

amino acids into ketoacids

ketoacids into amino acids

TRUE ANSWER : ?
YOUR ANSWER : ?

Nitrate reduction can be carried out by

plant and microorganism

only plants

only microorganism

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

16

15

10

5

TRUE ANSWER : ?
YOUR ANSWER : ?

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