MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following encodes recombinase? |
| A. | fliC |
| B. | fljB |
| C. | hin |
| D. | fljA |
| Answer» D. fljA | |
| 2. |
When DNA segment is in one orientation ____________ |
| A. | The gene for FljB and gene encoding FljA are expressed |
| B. | The gene for FliC are expressed |
| C. | The gene for FljB and gene encoding FljA are not expressed |
| D. | The gene for FljB and gene encoding FljC are not expressed |
| Answer» B. The gene for FliC are expressed | |
| 3. |
Whose interaction with Lex-A facilitates the repressor s self-cleavage reaction? |
| A. | Rec-A |
| B. | Rec-B |
| C. | Rec-C |
| D. | Rec-D |
| Answer» B. Rec-B | |
| 4. |
Formation of the attenuator stem-and-loop structure depends on the events that occur during translation of ____________ |
| A. | Regulatory sequence 1 |
| B. | Regulatory sequence 2 |
| C. | Regulatory sequence 3 |
| D. | Regulatory sequence 4 |
| Answer» B. Regulatory sequence 2 | |
| 5. |
Attenuator sequences base-pair to form a stem-and-loop structure rich in ____________ |
| A. | A = T |
| B. | G C |
| C. | A = C |
| D. | G = C |
| Answer» C. A = C | |
| 6. |
Trp repressor is a ____________ |
| A. | Homodimer |
| B. | Homotrimer |
| C. | Heterodimer |
| D. | Heterotrimer |
| Answer» B. Homotrimer | |
| 7. |
CAP is ____________ |
| A. | Catabolite gene activator protein |
| B. | Catabolite gene repressor protein |
| C. | Anabolite gene activator protein |
| D. | Anabolite gene repressor protein |
| Answer» B. Catabolite gene repressor protein | |