Question

Different types of RNA are present in the cells of living organisms. These RNA molecules perform many functions necessary to the survival of the cell.
Which of the following cannot be performed by any type of the RNA?
A. Act as a catalyst for protein degradation
B. Form the structure of a subcellular organelle
C. Bring amino acids to the site of translation
D. Carry the instructions for making polypeptides

Answer 1

Hint:Ribosomal RNA is a catalytic unit of the ribosomes in protein synthesis. It is the most stable type of Ribonucleic acid. 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.

Complete answer:
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.
The cells contain three types of RNA. Ribosomal RNA or rRNA is the most stable RNA that acts with ribosomes in protein synthesis. It is the catalytic component of the ribosomes. Messenger RNA or mRNA is the RNA that carries the genetic data found in the DNA to the ribosome. Transfer RNA or tRNA also referred to as soluble RNA. It is the smallest amino acid-carrying molecule to the protein synthesis site during translation.

Thus, the correct answer is option A. i.e., Act as a catalyst for protein degradation.

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.