Which of the following, when taken up by the cell, binds to the repressor so that the repressor nolonger binds to the operator?
a) ubiquitin
b) inducer
c) promoter
d) repressor
e) corepressor

Answer is B, inducer.

Explanation:

The inducer has the ability to regulates gene expression. It is also capable of activating transcription from specific genes within a cell.

Its function is to disable repressors. Example is lactose.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.