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Q.160) 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.

A) Statement I is incorrect but Statement II is correct

B) Both Statement I and Statement II are correct

C) Both Statement I and Statement II are incorrect

D) Statement I is correct but Statement II is incorrect

 

Answers (1)

best_answer

 Statement I is incorrect because both tRNA and rRNA interact with mRNA during the process of translation. The mRNA binds to the ribosome (which contains rRNA), and tRNA brings the appropriate amino acids based on the codon-anticodon pairing with the mRNA.

Statement II is correct as per NCERT. RNA interference (RNAi) is a cellular defense mechanism found in all eukaryotic organisms where small double-stranded RNA molecules inhibit gene expression by neutralizing specific mRNA molecules.

Hence, the correct answer is Option (1).

 

Posted by

Shreya Pandey

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