Small pieces of RNA that can regulate translation of mRNA are called
A)microRNA.
B)interfering RNA.
C)transfer RNA.
D)messenger RNA.

Question

Quizplus · Accepted Answer

MicroRNA are small RNA molecules (about 22 nucleotides long) that regulate gene expression by inhibiting the translation of mRNA to protein. They can bind to the mRNA and prevent it from being translated into protein by ribosome. This mechanism is called RNA interference (RNAi). Interfering RNA is another form of RNA that also participates in RNAi, but it is usually longer (around 21-30 nucleotides) and derived from exogenous sources, such as viruses. Transfer RNA (tRNA) delivers specific amino acids to the ribosome during protein synthesis, while messenger RNA (mRNA) carries the genetic information from DNA to the ribosome for protein synthesis.

Small Pieces of RNA That Can Regulate Translation of MRNA