Question

Which of the following BEST describes the characteristics and function of SIRNA?

A a short strand of RNA that can complement and inactivate a sequence of mRNA
B. a short strand of RNA that can act as a transcription factor to initiate transcription
C a strand of DNA that can bind to and inactivate an mRNA sequence
D. a tRNA that is not able to attach to a ribosome and therefore inhibits the process of translation

Answer 1

A. a short strand of RNA that can complement and inactivate a sequence of mRNA

Step-by-step explanation:

Just wanted to confirm. The explanation above me is correct.

Answer 2

A a short strand of RNA that can complement and inactivate a sequence of mRNA

Answer: Option A

Step-by-step explanation:

siRNA stands for small interfering RNA which has a set double-stranded RNA molecule. It is also called as silencing RNA or short interfering RNA. mRNA is a messenger molecule in the siRNA.

siRNA integrates into a protein complex known as RISC that tells the siRNA to target the RNA sequence. Then its double strands unwind into a short strand in that protein complex and remain bound to it.

It then directed by the RISC either to complement ( enhance) the mRNA molecule sequence or to degrade (inactivate) the mRNA molecule sequence.