A Researcher Introduces Double-Stranded RNA into a Culture of Mammalian

question 33

Multiple Choice

A researcher introduces double-stranded RNA into a culture of mammalian cells, and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe.
-Some time later, she finds that the introduced strand separates into single-stranded RNAs, one of which is degraded. What does this enable the remaining strand to do?

• A) attach to histones in the chromatin
• B) bind to complementary regions of target mRNAs
• C) bind to Dicer enzymes to destroy other RNAs
• D) activate other siRNAs in the cell
• E) bind to noncomplementary RNA sequences