Examlex
In an experiment studying caffeine intoxication, which of the following would be considered a placebo?
Tryptophan Operon
A segment of DNA in bacteria that regulates the production of tryptophan by switching the genes responsible for its synthesis on or off.
Active Repressor Protein
A protein that binds to specific DNA sequences to inhibit the transcription of certain genes, controlling gene expression.
Inactive RNA Polymerase
An RNA polymerase enzyme in a resting state that is not involved in the transcription of DNA into RNA.
Negative Control
An experiment or part of an experiment where no response is expected, serving to highlight the effect of the experimental treatment.
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