Question

Which one of the following molecule is NOT needed during translation in protein synthesis?

• A. m-RNA
• B. DNA
• C. r-RNA
• D. t-RNA

Hint:

Remember: {Translation uses mRNA, tRNA, and rRNA}, while {DNA is involved only in transcription}.

Answer 1

The Correct Option is B

Step 1: Understanding translation in protein synthesis.
Translation is the process by which the genetic code present on mRNA is decoded to form a polypeptide chain. This process takes place on ribosomes in the cytoplasm.

Step 2: Role of different molecules.
m-RNA: It carries the genetic code from DNA to ribosomes and acts as a template during translation.
r-RNA: It forms the structural and catalytic core of ribosomes, essential for peptide bond formation.
t-RNA: It brings specific amino acids to the ribosome according to the codon on mRNA.
DNA: DNA is involved in transcription, not directly in translation. Hence, it is not required during translation.

Step 3: Conclusion.
Since DNA does not directly participate in translation, the correct answer is (B) DNA.