Which among the following type of RNA is needed to synthesise a protein in a cell ?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) – All of these .
All three types of RNA are essential for protein synthesis in a cell, but they play different roles:
- mRNA (messenger RNA) - Carries the genetic code/instructions from DNA to the ribosome (required for protein synthesis).
- rRNA (ribosomal RNA) - Forms the core structure of ribosomes where protein synthesis occurs.
- tRNA (transfer RNA) - Delivers amino acids to the ribosome during translation (required to build the protein chain).
Correct Answer:
All three (mRNA, rRNA, and tRNA) are needed to synthesize a protein.
Key Points:
- mRNA provides the template (codon sequence).
- rRNA provides the ribosomal machinery.
- tRNA provides the amino acids (via anticodon-codon matching).