Question

The pentose sugar present in genetic material of polio virus is

• A. Ribose
• B. Sucrose
• C. Deoxyribose
• D. Fructose

Answer 1

Answer: (A)

Most of the virus particles have either DNA or RNA as their genetic material. Further different virus particles may have single stranded or double stranded strands of these nucleic acids. Single stranded RNA is found in most of the RNA viruses example tobacco mosaic virus, influenza virus, poliomyelitis virus, the bacteriophage MS-2, the bacterial viruses F2 and R17 (coliphage) and the avian leukemia virus.
RNA is a polymer of ribonucleotides. Ribonucleotides are phosphoric acid esters of ribonucleosides. Ribonucleosides are made up of ribose sugars and nitrogenous bases.

So, the correct answer is option A.