Question

Which of these is a common feature for the lac and trp operon?

A. Regulatory proteins bind to operator

B. Regulatory proteins bind to promoter

C. Regulatory proteins bind to repressor

Answer 1

@shrutipande9

Answer 2

@Pompeii00

Answer 3

@Abhisar

Answer 4

also could you explain

Answer 5

Well to begin, the answer is the last choice. Protein will bind to repressor. I'll explain now.

Answer 6

okay

Answer 7

Operon:
It consists of a repressor, promoter, operator, and any structural

Repressible and Inducible systems:
It turns out that these lac and trp operons, in particular, are two different types of systems. In the trp operon, the regulatory proteins will bind to the repressor. This is known as a repressible system. In the lac operon, the regulatory proteins will simply interact with the repressor protein so that it cannot bind to the operator. This is known as an inducible system. Regardless of the exact interaction, BOTH lac and trp operons have their regulatory proteins engaged with the repressor protein.

Additional details:
In the lac operon, the regulatory protein is interacting with the repressor protein in order to stop the repressor protein from binding to the operator. The operator is what controls the process of transcription. If the repressor protein cannot bind to the operator, then the process of transcription will proceed normally. The process is NOT respressed.

In the trp operon, the regulatory protein is actually binding to the repressor protein. This regulatory protein increases the affinity (amount of attractiveness) of the repressor protein. This makes it easier for the repressor protein to bind to the operator. If the repressor protein binds to the operator, it "represses" the operator, and stops the process of transcription.

Answer 8

Ohhh so now i see where you got the awnser from okay Thank you soooo much