MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Urea cycle converts |
| A. | ammonia into a less toxic form |
| B. | ketoacids into amino acids |
| C. | amino acids into ketoacids |
| D. | none of these |
| Answer» B. ketoacids into amino acids | |
| 2. |
The inputs to one cycle of the urea cycle are |
| A. | 1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of carbon dioxide, 3 molecules of ATP |
| B. | 1 molecule of urea, 1 molecule of ammonia, 3 molecules of ATP and 1 molecule of fumaric acid |
| C. | 1 molecule of fumaric acid, 1 molecule of urea, 3 molecules of AMP |
| D. | None of the above |
| Answer» B. 1 molecule of urea, 1 molecule of ammonia, 3 molecules of ATP and 1 molecule of fumaric acid | |
| 3. |
How many molecules of ATP are hydrolysed to form two molecule of ammonia? |
| A. | 10 |
| B. | 5 |
| C. | 16 |
| D. | 15 |
| Answer» D. 15 | |
| 4. |
The nitrogen atoms of urea produced in the urea cycle are derived from |
| A. | nitrate |
| B. | ammonia and aspartic acid |
| C. | nitrite |
| D. | ammonia |
| Answer» C. nitrite | |
| 5. |
The products of urea cycle are |
| A. | 1 molecule of urea, 1 molecule of ammonia, 1 molecule of ATP and 1 molecule of fumaric acid |
| B. | 1 molecule of fumaric acid, 1 molecule of urea, 1 molecule of AMP, 2 molecules of ADP |
| C. | 1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of fumaric acid, 1 molecule of ATP |
| D. | None of the above |
| Answer» C. 1 molecule of aspartic acid, 1 molecule of ammonia, 1 molecule of fumaric acid, 1 molecule of ATP | |
| 6. |
Nitrate reduction can be carried out by |
| A. | only microorganism |
| B. | plant and microorganism |
| C. | only plants |
| D. | none of these |
| Answer» C. only plants | |
| 7. |
Which of the following amino acid do not fall under the category of essential amino acid? |
| A. | Histidine |
| B. | Leucine |
| C. | Glycine |
| D. | Methionine |
| Answer» D. Methionine | |
| 8. |
Which of the following is used as carbon atom source while producing urea in the urea cycle? |
| A. | Arginine |
| B. | Aspartic acid |
| C. | Carbon dioxide |
| D. | Glucose |
| Answer» D. Glucose | |