Question

How many of the following statements are correct regarding functions of RNA?

A. It is a carrier of genetic information from DNA to ribosomes for synthesizing polypeptides.

B. It carries amino acids to ribosomes.

C. It is constituent component of ribosomes.

D. It contains the genetic makeup of most of the cell.

• A. 2
• B. 3
• C. 4
• D. 1

Answer 1

The correct option is B 3

A, B and C are correct statements regarding the functions of RNA.

RNA stands for ribonucleic acid. It is a polynucleotide chain made of many 5-C compound ribose sugars, phosphates and nitrogenous bases (purines and pyrimidines).

There are different types of RNA (Ribonucleic acid) such as mRNA, rRNA, tRNA etc.

Statement A- messenger RNA (mRNA) gets transcribed from the DNA and carries the information in the form of codons to ribosomes. These codons code for the amino acids, which join by peptide bonds and make polypeptide chains.

Statement B- transfer RNA (tRNA), also known as adapter molecule or soluble RNA. It carries amino acids from the cytoplasm to the ribosomes and mRNA for protein synthesis.

Statement C- ribosomal RNA (rRNA) is an important component of ribosomes.

All the above three statements are correct.

Statement D- DNA contains the genetic makeup of most of the cells. RNA contains the genetic makeup of some viruses like coronavirus.