On both the ocean floor and continental land
I believe it is Carbon Dioxide. When we take in Oxygen, we breathe out Carbon Dioxide.
Regulation of protein synthesis at the transcriptional level, since the question clearly states that the binding of the activated repressor to the operator (not promotor) prevents the binding of RNA polymerase to operator. RNA polymerase is used in transcription.
Hope this helps! :)
Answer:
In Eukaryotes, The DNA is so long that it needs to be super coiled to get fit inside the cell.
This process is required in both Eukaryotes and prokayotes. The super coiling and packaging using the DNA binding proteins allows the lengthy molecules to fit inside the cell.
The DNA in the bacterial cell is arranged in several super coiled forms. The over winding of DNA is prevented in bacterial cell by the help of an enzyme known as DNA gyrase which is a type of topoisomerase.
