Read the passage given below and answer the following question. |
Which is a reason for less stability of RNA in comparison to DNA? (Question 4) |
Presence of thymine Presence of OH group Presence of Ribose sugar Presence of cytosine |
Presence of OH group |
The correct answer is option (2) -Presence of OH group Presence of OH group One of the reasons for the less stability of RNA in comparison to DNA is the presence of the OH (hydroxyl) group at the 2' carbon of the ribose sugar in RNA. This hydroxyl group makes RNA more susceptible to hydrolysis and degradation. DNA, on the other hand, has a hydrogen atom at the 2' position of its deoxyribose sugar, making it more stable. The hydroxyl group in RNA can participate in reactions that lead to the breakdown of RNA molecules, making them relatively less stable compared to DNA. So, the correct answer is: Presence of OH group. |