Q. Regulatory proteins are the accessory proteins that interact with RNA polymerase and affect its role in transcription. Which of the following statements is correct about regulatory protein?
A) They only increase expression.
B) They only decrease expression.
C) They interact with RNA polymerase but do not affect the expression.
D) They can act both as activators and as repressors.
Explanation
In a transcription unit, the activity of RNA polymerase at promoter site is regulated by accessory proteins. These proteins can act as activators or repressor.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.