A solid cylinder of weight \( W = 100 \, \text{N} \) and radius \( r = 0.5 \, \text{m} \) is pulled along a horizontal plane by a horizontal force \( P = 90 \, \text{N} \) applied to the end of the string wound around the cylinder. What is the angular acceleration of the disc? Assume \( g = 10 \, \text{m/s}^2 \).
Given below are two statements:
Statement I: Transfer RNAs and ribosomal RNA do not interact with mRNA.
Statement II: RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence.
In the light of the above statements, choose the most appropriate answer from the options given below: