Question

Name the molecule ${}^{\prime }{M}^{\prime }$ that binds with the operator in the lac operon.

Answer 1

The given diagram shows the representation of the lac operon. The lac operon is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria.

The i region of operon codes for repressor mRNA which is synthesized and in the absence of inducer that is in the absence of lactose binds to the operator region and prevents RNA polymerase from transcribing.

So the M molecule in the diagram is 'repressor'.