Question 92

(Multiple Choice)

Use the following information to answer the questions below.
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.
-Within the first quarter hour,the researcher sees that the intact RNA is found in the cells.After 3 hours,she is not surprised to find that


A)Dicer enzyme has reduced it to smaller double-stranded pieces.
B)the RNA is degraded by 5' and 3' exonucleases.
C)the double-stranded RNA replicates itself.
D)the double-stranded RNA binds to mRNAs to prevent translation.
E)the double-stranded RNA binds to tRNAs to prevent translation.

Answer