Question

Which is true about tRNA?
A. It binds with an amino acid at its 3’ end.
B. It has five double stranded regions.
C. It has a codon at one end which recognizes the anticodon on messenger RNA.
D. It looks like a clover leaf in the three dimensional structure.

Answer 1

The tRNA helps to decode the messenger RNA sequence to a protein. The tRNA synthesizes a protein from an mRNA molecule at particular sites of the ribosome during translation.

Complete Answer:
- Ribonucleic acid (RNA) is a polymeric molecule that is important for the decoding and coding, expression of genes, and regulation. Nucleic acids are RNA and DNA. Nucleic acids form one of the four main macromolecules necessary for any known life type along with proteins, carbohydrates, and lipids.
- Certain RNA molecules are involved in cells through catalyzes of biological reactions, genetic expression regulation and sensing and transmitting cellular signal responses. Protein synthesis is a universal mechanism in which RNA molecules guide protein synthesis to ribosomes. It is one of the active processes.
- All tRNAs are made up of around 73 to 93 nucleotides that are folded into four base paired stems and three loops and look like a two-dimensional clover leaf. This is "L" shaped with a 3-D structure.
- The CCA series has the end of 3'. Amino acid binding to the 3 adenosin provides an aminoacyl-tRNA. Transfer RNA has 7-15 percent of modified bases after transcription. The D loop and ribothymidine (T) and pseudouridine in the T psi C loop almost always are dihydrouridine (D).
- The D-loop is used for the identification and binding of aminoacyl synthesis while the T psi C loops binds the charges of tRNA-amino acid to the tubes. The anticodon loop has three times the tip, which codes are based on the necessary mRNA codon.

Thus, the correct answer is option A. i.e., It binds with an amino acid at its 3' end.

Note: RNA is a high molecular weight complex compound that works in synthesis of cell protein and replaces DNA as a genetic code carrier for certain viruses. RNA consists of phosphodiester bonds, which form chains of varying lengths, of ribose nucleotides attached to it. Adenine, guanine, cytosine and uracil are the nitrogen bases in RNA.