Answer:
The answer is D.
They all live in or on a living organism.
Explanation:
These bacteria are special since they live in some of the most harsh habitats such as extreme. The majority are important decomposers.
Hope this helps you!
The right answer is The lac operon would be transcribed constitutively.
An operator is a nucleic acid segment to which a regulatory protein that modulates downstream gene expression is bound. it can either stimulate or inhibit the production of the gene product thus controlled.
If the operator is absent, there will be no more regulation of the operon, so the transcription of the operon will not be regulated, and the synthesis will be continuous and constitutive.
I think the answer is A. Competition. :)
Avoiding contact with UV radiation
