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. |
TATA box regulates the frequency with which the gene is transcribed. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following is a transcription factor widely employed in eukaryotic gene expression? |
| A. | NE1 |
| B. | NF1 |
| C. | NF2 |
| D. | NF3 |
| Answer» C. NF2 | |
| 3. |
CAAT and GC box are ________________ |
| A. | stop codons |
| B. | promoter sequences |
| C. | inhibitor sequences |
| D. | operator sequences |
| Answer» C. inhibitor sequences | |
| 4. |
Core promoter is the site that stretches between _______________ |
| A. | TATA box and start site |
| B. | TATA box and stop site |
| C. | TATA box and operator |
| D. | TATA box and the promoter |
| Answer» B. TATA box and stop site | |
| 5. |
One of the key-enzymes involved in gluconeogenesis is ______________ |
| A. | phosphoenolpyruvate carboxykinase |
| B. | phosphoenolpyruvate carboxylase |
| C. | phosphoenolpyruvate ethanol |
| D. | phosphoenolpyruvate esterase |
| Answer» B. phosphoenolpyruvate carboxylase | |
| 6. |
In the leucine-zipper motif, leucine occurs after every ____ amino acids. |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 7. |
Motifs are related structures present on the transcription factors constituting the _________________ domain. |
| A. | Activation |
| B. | DNA-binding |
| C. | RNA-binding domain |
| D. | Nucleic acid-binding |
| Answer» C. RNA-binding domain | |
| 8. |
How many domains are present in a transcription factor? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 9. |
In cellular reprogramming, which of the following is removed during chromatin reorganization? |
| A. | epigenetic marks |
| B. | histones |
| C. | lysosomes |
| D. | nucleosomes |
| Answer» B. histones | |
| 10. |
Importance of transcription factors in embryonic stem cells was demonstrated in ______________ |
| A. | 1990 |
| B. | 1994 |
| C. | 2000 |
| D. | 2006 |
| Answer» E. | |
| 11. |
Which cells are pluripotent? |
| A. | nucleosomes |
| B. | embryonic stem cells |
| C. | neurons |
| D. | hepatocytes |
| Answer» C. neurons | |
| 12. |
What percent of genes encode transcription factors? |
| A. | 5-10 |
| B. | 15-20 |
| C. | 40-50 |
| D. | 50-60 |
| Answer» B. 15-20 | |
| 13. |
Sequence-specific transcription factors can act as transcriptional activators or repressors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
How many types of transcription factors assist in transcription-level control? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 15. |
Which technology can be used to monitor thousands of genes in a single experiment? |
| A. | Centrifugation |
| B. | Polymerase chain reaction |
| C. | DNA microarrays |
| D. | RNA microarrays |
| Answer» D. RNA microarrays | |