MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these is a hereditary disease caused due to an error in amino acid metabolism? |
| A. | Homocystinuria |
| B. | Albinism |
| C. | Phenylketonuria |
| D. | Branched-chain ketoaciduria |
| Answer» D. Branched-chain ketoaciduria | |
| 2. |
Name the type of cell in which synthesis of urea cycle takes place? |
| A. | Pancreatic cell |
| B. | Hepatocyte |
| C. | Bowman’s gland cell |
| D. | Urinary epithelium cell |
| Answer» C. Bowman’s gland cell | |
| 3. |
The urea cycle is also referred to as Krebs-Henseleit cycle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
A person suffering from phenylketonuria on consumption food containing high phenylalanine may lead to the accumulation of |
| A. | phenylpyruvate |
| B. | phenylalanine |
| C. | isoleucine |
| D. | tyrosine |
| Answer» B. phenylalanine | |
| 5. |
Transamination is the transfer of an amino |
| A. | group from an amino acid to a keto acid |
| B. | acid to a carboxylic acid plus ammonia |
| C. | group from an amino acid to a carboxylic acid |
| D. | acid to a keto acid plus ammonia |
| Answer» B. acid to a carboxylic acid plus ammonia | |
| 6. |
A person with phenylketonuria will convert |
| A. | phenylalanine to isoleucine |
| B. | phenylalanine to phenylpyruvate |
| C. | tyrosine to phenylalanine |
| D. | phenylpyruvate to phenylalanine |
| Answer» C. tyrosine to phenylalanine | |
| 7. |
The most toxic compounds is |
| A. | phenylpyruvate |
| B. | tyrosine |
| C. | phenylalanine |
| D. | lysine |
| Answer» B. tyrosine | |
| 8. |
Transamination is the process where |
| A. | α-amino group is removed from the amino acid |
| B. | carboxyl group is transferred from amino acid |
| C. | none of the above |
| D. | polymerisation of amino acid takes place |
| Answer» B. carboxyl group is transferred from amino acid | |
| 9. |
Which of the following amino acids is considered as both ketogenic and glucogenic? |
| A. | Tryptophan |
| B. | Valine |
| C. | None of these |
| D. | Lysine |
| Answer» B. Valine | |
| 10. |
In the normal breakdown of phenylalanine, it is initially degraded to |
| A. | tryrosine |
| B. | fumarate |
| C. | phenylpuruvate |
| D. | lysine |
| Answer» B. fumarate | |
| 11. |
A best described ketogenic amino acid is |
| A. | tryptophan |
| B. | lysine |
| C. | none of these |
| D. | valine |
| Answer» C. none of these | |
| 12. |
A ketogenic amino acid is one which degrades to |
| A. | either acetyl CoA or acetoacetyl CoA |
| B. | keto-sugars |
| C. | multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA |
| D. | pyruvate or citric acid cycle intermediates |
| Answer» B. keto-sugars | |
| 13. |
A person with phenylketonuria is advised not to consume which of the following products? |
| A. | Fat containing food |
| B. | Glycine containing foods |
| C. | Aspartame |
| D. | Glucose |
| Answer» D. Glucose | |
| 14. |
An example of a transamination process is |
| A. | aspartate hexanoic acid = glutamate oxaloacetate |
| B. | glutamate = hexanoic acid NH3 |
| C. | glutamate = α-ketoglutarate NH3 |
| D. | aspartate α ketoglutarate = glutamate oxaloacetate |
| Answer» E. | |
| 15. |
An example of the oxidative deamination is |
| A. | aspartate α-ketoglutarate = glutamate oxaloacetate |
| B. | glutamate = hexanoic acid NH3 |
| C. | aspartate hexanoic acid = glutamate Oxaloacetate |
| D. | glutamate = α-ketoglutarate NH3 |
| Answer» E. | |
| 16. |
Histidine is degraded to α-ketoglutarate and is described as a |
| A. | glucogenic amino acid |
| B. | glucogenic amino acid |
| C. | keto-gluco amino acid |
| D. | ketogenic amino acid |
| Answer» B. glucogenic amino acid | |
| 17. |
Lysine is degraded to acetoacetyl CoA and is described as a |
| A. | glucogenic amino acid |
| B. | ketogenic amino acid |
| C. | none of these |
| D. | keto-gluco amino acid |
| Answer» C. none of these | |
| 18. |
Oxidative deamination is the conversion of an amino |
| A. | acid to a carboxylic acid plus ammonia |
| B. | group from an amino acid to a keto acid |
| C. | group from an amino acid to a carboxylic acid |
| D. | acid to a keto acid plus ammonia |
| Answer» E. | |
| 19. |
A glucogenic amino acid is one which is degraded to |
| A. | either acetyl CoA or acetoacetyl CoA |
| B. | keto-sugars |
| C. | none of the above |
| D. | pyruvate or citric acid cycle intermediates |
| Answer» E. | |
| 20. |
NAME_THE_TYPE_OF_CELL_IN_WHICH_SYNTHESIS_OF_UREA_CYCLE_TAKES_PLACE??$ |
| A. | Pancreatic cell |
| B. | Hepatocyte |
| C. | Bowman’s gland cell |
| D. | Urinary epithelium cell |
| Answer» C. Bowman‚Äö√Ñ√∂‚àö√ë‚àö¬•s gland cell | |
| 21. |
Which_of_these_is_a_hereditary_disease_caused_due_to_an_error_in_amino_acid_metabolism?$ |
| A. | Homocystinuria |
| B. | Albinism |
| C. | Phenylketonuria |
| D. | Branched-chain ketoaciduria |
| Answer» D. Branched-chain ketoaciduria | |
| 22. |
The urea cycle is also referred to as Krebs-Henseleit cycle? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 23. |
Name those living organisms which secrete nitrogen in the form of urea? |
| A. | Ureotelic |
| B. | Uricotelic |
| C. | Ammonotelic |
| D. | Nitroso compounds |
| Answer» B. Uricotelic | |
| 24. |
Name the amino acid which does not take part in transamination during amino acid catabolism. |
| A. | Proline |
| B. | Threonine |
| C. | Lysine |
| D. | Serine |
| Answer» E. | |
| 25. |
Intermediates of which of the following metabolic pathway have not been used in the synthesis of amino acids? |
| A. | Glycolysis |
| B. | Fatty acid biosynthesis |
| C. | Citric acid cycle |
| D. | Pentose phosphate pathway |
| Answer» C. Citric acid cycle | |
| 26. |
Transamination reaction in amino acid synthesis is catalyzed by enzyme_________ |
| A. | Nitric oxide synthase |
| B. | Decarboxylase |
| C. | Aminotransferase |
| D. | Glutamate decarboxylase |
| Answer» B. Decarboxylase | |
| 27. |
In which form the nitrogen is incorporated into an amino acid? |
| A. | Nitrite |
| B. | Glutamate |
| C. | Nitrate |
| D. | Ammonium ion |
| Answer» E. | |
| 28. |
Which of these amino acids are essential for infants? |
| A. | Methionine |
| B. | Arginine and Histidine |
| C. | Valine |
| D. | Lysine and Leucine |
| Answer» C. Valine | |
| 29. |
Which of the following is non-essential amino acid? |
| A. | Lysine |
| B. | Leucine |
| C. | Serine |
| D. | Methionine |
| Answer» D. Methionine | |