Question 1 / 28:  A protein binds a DNA sequence several hundred base pairs upstream of a promoter and increases the rate of transcription of the gene, which the promoter controls. This protein is called which of the following?
A  Repressor
B  Lactose
C  Polymerase
D  Enhancer
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Molecular & Cellular Biology

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Attribution:  Liang Wang, Johanna Choo, Ann Schlosser and Katie George. Introduction to Molecular and Cellular Biology. (The Saylor Academy 2014), http://www.saylor.org/courses/bio101a/ (Accessed 16 May, 2014). License: Creative Commons BY-NC-ND
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