Question

Ribose is differentiable from deoxyribose in having
(A) Two extra oxygen
(B) No oxygen
(C) Hydroxyl group
(D) One extra hydrogen

Answer 1

Hint: The expansion of DNA is the deoxyribonucleic acid. It is the hereditary or the genetic material of most of all the organism like human, animals etc. where RNA is the ribonucleic acid which is used in the coding, decoding of the genes.

Complete Answer:
(1) DNA: DNA contains the chemical code for the development, growth, reproduction etc. The DNA of the person is the same in all cells. The chemical materials that make up the DNA are guanine, cytosine, thymine and adenine. Deoxyribose is the nucleic acid which contains five carbon molecules with the hydrogen molecule in the second carbon molecule.

(2) RNA: RNA is also the nucleic acid which helps in the process of expression of the gene. Their main function is to convert the gene stored in the DNA into the proteins. RNA is made of adenine, uracil, cytosine and guanine. They have hydroxyl groups in the second carbon molecule.
Hence from the above explanation, ribose is differentiated from deoxyribose in having hydroxyl group in the place of hydrogen.

Thus, the option (C) is correct.

Note: RNA is the single stranded structure with the sugar and ribose molecules where the DNA is the double stranded but lacks one oxygen atom in the sugar. The DNA and RNA are made of the same material except the fact that DNA has thymine and RNA has uracil in the chemical part of the structure.