Molecular Biology Help! In positive regulation, a(n) ______________ activates a promoter. activator repressor enhancer regulon none...
Molecular Biology Help!
In positive regulation, a(n) ______________ activates a promoter.
| activator |
| repressor |
| enhancer |
| regulon |
| none of the above |
In negative regulation, a(n) _____________ turns off the transcription of one or more genes.
| activator |
| repressor |
| enhancer |
| regulon |
| none of the above |
The _______ activator protein regulates the araBAD operon.
| allolactose |
| cAMP-CRP |
| AraC |
| enhancer |
| none of the above |
Three _____ protein binding sites increase rrn transcription.
| promoter |
| Fis |
| AraC |
| cAMP-CRP |
| none of the above |
Homework Answers
Ans:
In positive regulation, a(n) activator activates promoter.
Explanation:
- Most activators are DNA binding proteins that bind to promoter.
In negative regulation, a(n) repressor turns off the transcription of one or more genes.
Explanation:
- A repressor is a DNA or RNA binding protein that inhibits the expression of one or more genes by binding to the operator.
Add Answer to:
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