MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the next step in the process of transcription?DNA -> RNA ->? |
| A. | mRNA |
| B. | tRNA |
| C. | rRNA |
| D. | Protein |
| Answer» E. | |
| 2. |
What will the polarity of this strand be? |
| A. | Parallel, 3’->5’ |
| B. | Antiparallel, 3’->5’ |
| C. | Parallel, 5’->3’ |
| D. | Antiparallel, 5’->3’ |
| Answer» C. Parallel, 5’->3’ | |
| 3. |
Which of the following is not a part of the nucleotide? |
| A. | Phosphate group |
| B. | Nitrogenous base |
| C. | Pentose sugar |
| D. | Guanosine |
| Answer» E. | |
| 4. |
Which of the following ensures the stability of the helical structure of a DNA? |
| A. | Presence of repetitive structures of a DNA code |
| B. | Stacking of one base pair over the other |
| C. | Presence of aneuploidy |
| D. | Occurrence of chromosomal rearrangements |
| Answer» C. Presence of aneuploidy | |
| 5. |
What is name of this nitrogenous base? |
| A. | Uracil |
| B. | Thymine |
| C. | Cytosine |
| D. | Guanine |
| Answer» C. Cytosine | |
| 6. |
Which of the following occurs in the process of central dogma reverse? |
| A. | Conversion of a strand of mRNA to DNA |
| B. | Changes in the chromosomal karyotype |
| C. | Gene replication process |
| D. | Protein production process |
| Answer» B. Changes in the chromosomal karyotype | |
| 7. |
Which is the correct complementary strand for AGAATTCGC? |
| A. | CTCCGGATA |
| B. | GAGGCCTAT |
| C. | TCTTAAGCG |
| D. | GTGGCCATA |
| Answer» D. GTGGCCATA | |
| 8. |
Which of the following enzymes are used to transcript a portion of the DNA into mRNA? |
| A. | RNA polymerase |
| B. | DNA polymerase |
| C. | Protein polymerase |
| D. | Hydrolase |
| Answer» B. DNA polymerase | |
| 9. |
Which among the following is the exact ratio of guanine to cytosine in a DNA double helical structure? |
| A. | 3:2 |
| B. | 2:1 |
| C. | 1:3 |
| D. | 1:1 |
| Answer» E. | |
| 10. |
Who considered DNA as a “Nuclein”? |
| A. | James Watson |
| B. | Friedrich Meischer |
| C. | Francis Crick |
| D. | Rosalind Franklin |
| Answer» C. Francis Crick | |
| 11. |
What is chemical name for thymine known as? |
| A. | 5-methoxy uracil |
| B. | 3-methoxy uracil |
| C. | 5-methyl uracil |
| D. | 3-methy uracil |
| Answer» D. 3-methy uracil | |
| 12. |
Through which among the following linkages are the two nucleotides connected through the 3’-5’ end? |
| A. | Phosphodiether linkage |
| B. | Phosphodisulphide linkage |
| C. | Phosphodinitrate linkage |
| D. | Phosphodiester linkage |
| Answer» E. | |
| 13. |
Thymine is present in the place of Uracil in DNA. |
| A. | True |
| B. | False |
| Answer» B. False | |