Which of the Following Describes the Function of an Enzyme

Question

Which of the following describes the function of an enzyme known as Dicer?
A)It degrades single-stranded DNA.
B)It degrades single-stranded mRNA.
C)It degrades mRNA with no poly-A tail.
D)It trims small double-stranded RNAs into molecules that can block translation or help degrade mRNA.
E)It chops up single-stranded DNAs from infecting viruses.

Accepted Answer

Dicer is an enzyme involved in RNA interference. It trims double-stranded RNAs into small interfering RNAs (siRNAs) that can block translation or help degrade mRNA. Thus, it plays a crucial role in regulating gene expression.