Question

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:

• A. Both Statement I and Statement II are incorrect
• B. Statement I is correct but Statement II is incorrect
• C. Statement I is incorrect but Statement II is correct
• D. Both Statement I and Statement II are correct

Hint:

RNA interference (RNAi) is a key regulatory mechanism in eukaryotic cells that protects against foreign genetic elements and regulates gene expression.

Answer 1

The Correct Option is C

Let's evaluate the two statements: Statement I: "Transfer RNAs and ribosomal RNA do not interact with mRNA" is incorrect. Both transfer RNA (tRNA) and ribosomal RNA (rRNA) play crucial roles in protein synthesis by interacting with mRNA. tRNA carries amino acids to the ribosome, where rRNA facilitates protein synthesis by catalyzing the formation of peptide bonds between amino acids.
Statement II: "RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence" is correct. RNA interference is a biological process that occurs in many eukaryotic organisms and involves small RNA molecules that regulate gene expression by degrading mRNA or inhibiting translation. It serves as an important defense mechanism against viruses and transposons. Thus, the correct answer is Statement I is incorrect but Statement II is correct.