MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Bioinformatics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
DNA is methylated at |
| A. | AC sequences |
| B. | TATA sequences |
| C. | CAAT sequences |
| D. | CG sequences |
| Answer» E. | |
| 2. |
In the presence of tryptophan in the cell, the repressor is __________ |
| A. | bound to tryptophan |
| B. | bound to DNA |
| C. | bound to both DNA and tryptophan |
| D. | bound to neither tryptophan nor DNA |
| Answer» D. bound to neither tryptophan nor DNA | |
| 3. |
The TATA box is often used as an indicator of the presence of a promoter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Eukaryotic RNA polymerase II does not directly bind to the promoter, but relies on a dozen or more transcription factors to recognize and bind to the promoter in a specific order before its own binding around the promoter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
In eukaryotes, genes often form an operon with a shared promoter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The upstream sequence where the σ protein binds constitutes the promoter sequence. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
THE_TATA_BOX_IS_OFTEN_USED_AS_AN_INDICATOR_OF_THE_PRESENCE_OF_A_PROMOTER.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
EUKARYOTIC_RNA_POLYMERASE_II_DOES_NOT_DIRECTLY_BIND_TO_THE_PROMOTER,_BUT_RELIES_ON_A_DOZEN_OR_MORE_TRANSCRIPTION_FACTORS_TO_RECOGNIZE_AND_BIND_TO_THE_PROMOTER_IN_A_SPECIFIC_ORDER_BEFORE_ITS_OWN_BINDING_AROUND_THE_PROMOTER.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
In eukaryotes, genes often form an operon with a shared promoter? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
In eukaryotes, gene expression is not regulated by a protein complex formed between transcription factors and RNA polymerase. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
The specific DNA sequences to which the transcription factors bind are referred to as _____ |
| A. | replication elements |
| B. | blocking factors |
| C. | transcription factors |
| D. | regulatory elements |
| Answer» E. | |
| 12. |
In addition to the RNA polymerase, there are also a number of DNA-binding proteins that facilitate the process of transcription. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
The promoter sequence may determine the expression of one gene or a number of linked genes downstream. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
The upstream sequence where the σ protein binds constitutes the promoter sequence.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
In bacteria, transcription is initiated by DNA polymerase. |
| A. | True |
| B. | False |
| Answer» C. | |