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In the absence of lactose, how does the lac repressor inhibit transcription of the lac operon?

How are enhancers and promoters similar?

Which is a mechanism of histone change that is mediated by chromatin remodeling factors?

You are interested in studying a protein expressed on the surface of liver cells. How could treatment of these cells with a glycosidase (an enzyme that cleaves carbohydrates) enable you to determine whether the protein is a transmembrane protein or one that is attached to the cell surface by a GPI anchor?

mRNAs are degraded in the cytoplasm by?

You treat cells with an inhibitor of protein phosphatases. How would this affect proteins that are regulated by phosphorylation?

What role does the proteasome play in cells?

During the elongation phase of translation, which elongation factor needs to be regenerated very rapidly and frequently?

Which rationale best describes the ability of an enhancer to mediate transcription from very distant sites?

According to Nussbaum, why is liberal arts education (i.e., the humanities) important in democratic societies?