The correct answer is d: transcription can be turned off when a repressor binds to the DNA near the promoter.
<span>The repressor is a protein which prevents a gene from being expressed (inhibits transcription from occurring). Near the promoter, there is a site called the operator, which is the binding site for the repressor. When the repressor binds, RNA polymerase is prevented from <span>binding to the promoter and initiating transcription. Gene expression is then turned off.</span></span>
Answer:
sensory neurons changes in the environment motor neutrons
The most primitive form of life is Bacteria.
C. Bacteria.
Answer:
glucose, water is found organisms but mixed with other substances
Answer:
they work together to benefit
