Identify similarities and differences between an inducib...

Question

Identify similarities and differences between an inducible operon and a repressible operon in terms of

the organization of structural genes of the operon.

Accepted Answer

Hi, everyone. Let's take a look at this practice problem together. The operon that contributes to the breakdown of complex compounds like lactose is known as the answer. Options are a anti terminator operon B, inducible operon C, repressible operon and D constitutive operon. OK. So immediately we are going to eliminate option a anti terminator operon. We should recognize that this is not a known type of operon in genetics. So we're left with three answer options to choose from. Let's go ahead and define these answer options and then we, we will review what operon breaks down lactose to decide the correct answer. So option B, the inducible operon, this type of operon is one that is normally turned off. However, it can be induced to turn on by certain molecules called inducers. Option seeing a repressible operon is one that is usually turned on, but it can be repressed to turn off to be turned off by certain molecules called repressors. And lastly, the constitute of operon is always on. OK. So let's go ahead and review what OPERON breaks down molecules like lactose. Now, that is done by the LAC operon. Now, what do we remember about the last operon, it metabolizes lactose and remember that it is a set of genes that is controlled by a single promoter. Now, in E coli this operon is usually turned off. And that is when the lac repressor protein is bound to the operator. However, in the presence of lactose, it is able to be turned on the inducer allo lactose turns on the operon by binding the repressor and that makes the repressor fall off of the operator. So transcription can occur. So the lack operon turns on due to the inducer allo lactose. Therefore, it is an inducible operon. So the correct answer is option B inducible operon. All right, everyone. I hope you found this helpful and I'll see you soon for the next practice problem.

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Identify similarities and differences between an inducible operon and a repressible operon in terms of

the organization of structural genes of the operon.

My Courses

Chemistry

Biology

Math

Physics

Business

Social Sciences

Programming

Product & Marketing

Identify similarities and differences between an inducible operon and a repressible operon in terms ofthe organization of structural genes of the operon.

Identify similarities and differences between an inducible operon and a repressible operon in terms of

the organization of structural genes of the operon.