You Are Studying the Effects of Specific Transcription Factors on the Activation

question 2

Multiple Choice

You are studying the effects of specific transcription factors on the activation of gene expression.You notice that one particular transcription factor binds far away from the promoter of its target gene.What can explain this?

• A)The transcription factor transcribes small RNAs that then bind to the promoter and activate the gene's expression.
• B)The transcription factor tags the enhancer with ubiquitin to stimulate transcription.
• C)DNA looping brings the transcription factor closer to the promoter and initiates gene transcription.
• D)RNA looping brings the transcription factor closer to the promoter and initiates gene transcription.

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Definitions:

Positive Feedback

A process in which the end products of an action cause more of that action to occur in a feedback loop.

Innate Immunity

The primary protection in the immune system, which includes physical, chemical, and cellular responses to pathogens and is innate from the moment of birth.

Allergen

A normally harmless substance that provokes an immune response in some people.

Narcissistic

Relating to narcissism, characterized by an excessive interest in or admiration of oneself and one's physical appearance.