Question

The function of mRNA in protein synthesis is

• A. To make up the structure of the ribosome
• B. To carry amino acids to the ribosome
• C. To catalyze bonds between nucleotides
• D. To serve as a template for the synthesis of DNA
• E. To carry information determining amino acid sequence

Answer 1

The correct option is E To carry information determining amino acid sequence

Messenger RNAs (mRNAs) specify the amino acid sequence of one or more polypeptides, thus it transfers genetic information from DNA to ribosomes and determines the amino acid sequence of proteins. This makes option E correct.

Transfer RNAs (tRNAs) read the genetic information present in the form of triplets in the mRNA and transfer the appropriate amino acid from amino acid pool of cytoplasm to a growing polypeptide chain during protein synthesis. This makes option B incorrect.

Ribosomal RNAs (rRNAs) are structural constituents of ribosomes that provide the site for protein synthesis which makes them the most abundant form of RNA. Option A is incorrect.

Options C and D are incorrect as proteins synthesis does not involve DNA as template and bond formation between nucleotides.

Therefore, the correct answer is option E.