MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In bacteria, binding of _________ factor to the RNA polymerase increases its affinity for promoter sites in the DNA. |
| A. | alpha |
| B. | sigma |
| C. | rho |
| D. | beta |
| Answer» C. rho | |
| 2. |
Which enzyme makes the transcription, an essentially irreversible process? |
| A. | pyrophosphatase |
| B. | amylase |
| C. | glucamylase |
| D. | topoisomerase |
| Answer» B. amylase | |
| 3. |
The transcription factors assist the RNA polymerase in locating ________________ |
| A. | stop codon |
| B. | mutation |
| C. | active site |
| D. | promoter |
| Answer» E. | |
| 4. |
Which of the two strands of DNA will be transcribed is determined by the _______________ |
| A. | RNA polymerase |
| B. | DNA polymerase |
| C. | Promoter sequence |
| D. | Inducer sequence |
| Answer» D. Inducer sequence | |
| 5. |
Promoter is a ____________________ |
| A. | gene |
| B. | site on DNA |
| C. | site on RNA |
| D. | toxin |
| Answer» C. site on RNA | |
| 6. |
Which of the following enzymes are used in the process of transcription? |
| A. | DNA polymerases |
| B. | RNA polymerases |
| C. | DNA helicase |
| D. | DNA topoisomerase |
| Answer» C. DNA helicase | |
| 7. |
Which of the following play a role in structural support? |
| A. | rRNA |
| B. | mRNA |
| C. | tDNA |
| D. | tRNA |
| Answer» B. mRNA | |
| 8. |
RNA is a mobile nucleic acid. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
After transcribing into RNA, the gene is spliced out of the genome. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Transcription is the synthesis of ______________________ |
| A. | RNA |
| B. | DNA |
| C. | Protein |
| D. | Polypeptide |
| Answer» B. DNA | |
| 11. |
What is the intermediate between a gene and its polypeptide? |
| A. | mRNA |
| B. | tRNA |
| C. | rRNA |
| D. | siRNA |
| Answer» B. tRNA | |
| 12. |
In patients of sickle cell anemia, the hemoglobin contains a substitution for ____________________ |
| A. | glutamic acid |
| B. | ascorbic acid |
| C. | carboxylic acid |
| D. | quinone |
| Answer» B. ascorbic acid | |
| 13. |
Which proteolytic enzyme was used in the experiments aimed at elucidating the mutation that causes sickle cell anemia? |
| A. | papain |
| B. | rennin |
| C. | pepsin |
| D. | trypsin |
| Answer» E. | |
| 14. |
Which organism was used for experiments that led to one gene one enzyme hypothesis? |
| A. | <em>Neurospora</em> |
| B. | <em>Nematode</em> |
| C. | <em>Mus musculus</em> |
| D. | <em>Drosophila</em> |
| Answer» B. <em>Nematode</em> | |
| 15. |
When was the link between enzymes and inherited disease first elucidated? |
| A. | 1708 |
| B. | 1808 |
| C. | 1908 |
| D. | 2008 |
| Answer» D. 2008 | |