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In eukaryotes, transcription factors and enhancer sequences are used to regulate

ID: 49547 • Letter: I

Question

In eukaryotes, transcription factors and enhancer sequences are used to regulate transcription. Classify the following statements as true or false. True False Transcription factors are composed of amino acids. Transcription factors bind to the entire enhancer sequence. Enhancer sequences can be located thousands of base pairs downstream from the transcription start site. Transcription factors always increase transcription levels. Enhancer sequences can alter transcription levels in the absence of a bound protein.

Explanation / Answer

True: Enhancer sequences can be locate thousands of base pais downstream from the transcription start site

Transcription factors are composed of amino acids.

False: Transcription factors always increase transcription levels (they may increase or decrease)

Transcription factors bind to entire enhancer sequence. (they bind to specific DNA locations)

Enhancer sequences can alter transcription levels in the absence of a bound protein.