Regulatory protein(s) present in Archaea is/are ?

[Amanda0628]

Regulatory protein(s) present in Archaea is/are ?

A)

Activators that stimulate RNA polymerase activity are present in Archaea.

B)

Both activators and repressors are present in Archaea.

C)

Similar to regulation in Eukarya, Archaea lack bacterial-like regulators such as activators and repressors and use transcription factors instead.

D)

Repressors that block RNA polymerase activity are present in Archaea.

 

I had thought it was what is in red, but got it wrong. Can someone point me in the right direction?

[MonDie]

Well, archaea are closer to eukarya than bacteria. I don't know the answer though.

[CharonY]

That is not quite correct, or at least not quite clear. I will note that the question can seem to be quite misleading, and it is likely that it is supposed to be a trick question, which may have gotten you confused. C) makes a distinction between activators/repressors and transcription factors. However, you will have to know that activators/repressors are just a sub-class of transcription factor and merely describe their regulatory role. So obviously both will be present in all organisms. Since I assume that you can only select one answer you will have to check what each implies (e.g. A) implies there are activators, what would it imply about repressors?).

[BabcockHall]

Two component systems are found in the archaea. Most of the two component systems with which I am familiar are in bacteria, and they are often transcriptional activators.