COMLEX Level 1

Figure 2.

The pentose sugar in DNA and RNA is different. DNA contains deoxyribose as its pentose sugar, while RNA contains ribose as its pentose sugar. If the nitrogenous base plus the pentose sugar are connected, these are called nucleosides. Once the nucleoside has a phosphate group on it, it is called a nucleotide. The connections between nucleotides occurs by linking the 3-prime hydroxyl group of one pentose sugar to the

8