Question

The enzyme aminoacyl-tRNA synthetase is responsible for linking ____________________________

(a) amino acid to tRNA

(b) amino acid to mRNA

(c) carboxyl to tRNA

(d) carboxyl to mRNA

I had been asked this question in an online quiz.

The doubt is from Gene Expression topic in chapter Gene Expression of Cell Biology

Answer 1

The correct answer is:

(a) amino acid to tRNA

Explanation:

The enzyme aminoacyl-tRNA synthetase is responsible for attaching the appropriate amino acid to its corresponding tRNA molecule during protein synthesis. This process is called aminoacylation. The aminoacyl-tRNA is then used in the ribosome for protein synthesis, where the tRNA matches its anticodon with the codons on mRNA to add the correct amino acid to the growing polypeptide chain.