MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Glycine and proline are the most abundant amino acids in which of the following structure? |
| A. | Hemoglobin |
| B. | Myoglobin |
| C. | Insulin |
| D. | Collagen |
| Answer» E. | |
| 2. |
DNA is composed of repeating units of ___________ |
| A. | ribonucleosides |
| B. | deoxyribonucleosides |
| C. | ribonucleotides |
| D. | deoxyribonucleotides |
| Answer» E. | |
| 3. |
A nucleoside is formed of which of the following units? |
| A. | nitrogen base and phosphate |
| B. | nitrogen base, sugar and phosphate |
| C. | nitrogen base and sugar |
| D. | sugar and phosphate |
| Answer» D. sugar and phosphate | |
| 4. |
To which of the following does guanine form hydrogen bonds in DNA? |
| A. | adenine |
| B. | thymine |
| C. | cytosine |
| D. | guanine |
| Answer» D. guanine | |
| 5. |
In double helix of DNA, the two DNA strands show which type of characteristics? |
| A. | coiled around a common axis |
| B. | coiled around each other |
| C. | coiled differently |
| D. | coiled over protein sheath |
| Answer» B. coiled around each other | |
| 6. |
A_NUCLEOSIDE_IS_FORMED_OF_WHICH_OF_THE_FOLLOWING_UNITS??$ |
| A. | nitrogen base and phosphate |
| B. | nitrogen base, sugar and phosphate |
| C. | nitrogen base and sugar |
| D. | sugar and phosphate |
| Answer» D. sugar and phosphate | |
| 7. |
Glycine and proline are the most abundant amino acids in which of the following structure?$ |
| A. | Hemoglobin |
| B. | Myoglobin |
| C. | Insulin |
| D. | Collagen |
| Answer» E. | |
| 8. |
DNA is composed of repeating units of$ |
| A. | ribonucleosides |
| B. | deoxyribonucleosides |
| C. | ribonucleotides |
| D. | deoxyribonucleotides |
| Answer» E. | |
| 9. |
Which of the characteristics below apply to amino acid Glycine? |
| A. | Optically inactive |
| B. | Hydrophilic, basic and charged |
| C. | Hydrophobic |
| D. | Hydrophilic, acidic and charged |
| Answer» B. Hydrophilic, basic and charged | |
| 10. |
Which of the following amino acid is a limiting amino acid in pulses? |
| A. | Leucine |
| B. | Lysine |
| C. | Methionine |
| D. | Glutamine |
| Answer» D. Glutamine | |
| 11. |
Which amino acid can form disulphide bonds? |
| A. | Proline |
| B. | Leucine |
| C. | Cysteine |
| D. | Valine |
| Answer» D. Valine | |
| 12. |
Which of the following amino acids is mostly likely to disrupt an alpha helix? |
| A. | Proline |
| B. | Leucine |
| C. | Glycine |
| D. | Valine |
| Answer» B. Leucine | |
| 13. |
Which of the following statements about amino acids is correct? |
| A. | Amino acids are uncharged at neutral pH |
| B. | Amino acids are classified according to the structures and properties of their side chains |
| C. | Amino acids in proteins are mainly in the D-configuration |
| D. | Twenty four amino acids are commonly used in protein synthesis |
| Answer» C. Amino acids in proteins are mainly in the D-configuration | |
| 14. |
What amino acid is coded by the triplet of bases UAU? |
| A. | phenylalanine |
| B. | serine |
| C. | tyrosine |
| D. | cysteine |
| Answer» D. cysteine | |
| 15. |
What term is used to describe the process by which a segment of DNA is copied to produce a molecule of messenger RNA? |
| A. | reproduction |
| B. | replication |
| C. | translation |
| D. | transcription |
| Answer» E. | |
| 16. |
What term is used to describe the process by which DNA is copied to produce two daughter DNA molecules? |
| A. | reproduction |
| B. | replication |
| C. | translation |
| D. | transcription |
| Answer» C. translation | |
| 17. |
To which of the following does thymine form hydrogen bonds in DNA? |
| A. | adenine |
| B. | thymine |
| C. | cytosine |
| D. | guanine |
| Answer» B. thymine | |
| 18. |
Which of the following nitrogenous base is not present in RNA? |
| A. | adenine |
| B. | thymine |
| C. | cytosine |
| D. | guanine |
| Answer» B. thymine | |
| 19. |
A nucleotide is formed of which of the following units? |
| A. | nitrogen base and phosphate |
| B. | nitrogen base, sugar and phosphate |
| C. | nitrogen base and sugar |
| D. | sugar and phosphate |
| Answer» C. nitrogen base and sugar | |
| 20. |
In double helix of DNA, the two DNA strands show which type of characteristics? |
| A. | coiled around a common axis |
| B. | coiled around each other |
| C. | coiled differently |
| D. | coiled over protein sheath |
| Answer» B. coiled around each other | |