NEET BIOLOGY

Detailed explanation-1: -As RNA is single stranded its nitrogenous bases are not away from the water, that makes it more reactive than that of DNA. So, it is clear from the above discussion that the RNA is more reactive and less stable as compared to DNA. Hence, option C is the right answer.

Detailed explanation-2: -Due to its deoxyribose sugar, which contains one less oxygen-containing hydroxyl group, DNA is a more stable molecule than RNA, which is useful for a molecule which has the task of keeping genetic information safe. RNA, containing a ribose sugar, is more reactive than DNA and is not stable in alkaline conditions.

Detailed explanation-3: -While DNA contains deoxyribose, RNA contains ribose, characterised by the presence of the 2′-hydroxyl group on the pentose ring (Figure 5). This hydroxyl group make RNA less stable than DNA because it is more susceptible to hydrolysis.

Detailed explanation-4: -Chemically, RNA is (i) reactive and (ii) stable as compared to DNA.

Detailed explanation-5: -DNA has deoxyribose sugar which implies that it does not possess 2’-OH group. Due to the absence of this hydroxy group, DNA is less reactive, labile and more stable compared to RNA where free 2’-OH group is present in the sugar.