Question

MicroRNAs are noncoding RNAs that are incorporated into a protein complex called _____________ which searches the __________ s in the cytoplas, for sequence complementary to that of miRNA. When such a molecule is found, it is then targeted for ________________. RNAi is triggered by the presence of foreign ___________________________ molecules, which are digested by the _____________ enzyme into shorter fragments approximately 23 nucleotides pairs in length.

Answer 1

MicroRNAs are noncoding RNAs included in the RISC complex, which degrades complementary mRNA molecules in the cytoplasm. The Dicer enzyme helps in processing the miRNAs and in RNAi, triggered by foreign double-stranded RNA.

Step-by-step explanation:

MicroRNAs are noncoding RNAs that are incorporated into a protein complex called RNA-induced silencing complex (RISC) which searches the messenger RNA (mRNA) in the cytoplasm, for sequence complementary to that of miRNA. When such a molecule is found, it is then targeted for degradation. RNAi is triggered by the presence of foreign double-stranded RNA molecules, which are digested by the Dicer enzyme into shorter fragments approximately 23 nucleotides in length.