{ "content": "

RNA<\/a> (Ribonucleic Acid)<\/h1>

RNA<\/a> is a primary biological molecule essential for all known forms of life. Chemically, it is a polymeric molecule made up of one or more Nucleotides<\/a>. Each nucleotide consists of a Ribose<\/a> sugar, a phosphate group, and a nitrogenous base. Unlike DNA<\/a>, which is typically double-stranded, RNA<\/a> is usually found as a single-stranded molecule, though it can fold into complex three-dimensional structures.<\/p>

Structure and Composition<\/h2>

The nitrogenous bases in RNA<\/a> include Adenine<\/a>, Guanine<\/a>, Cytosine<\/a>, and Uracil<\/a>. In RNA<\/a>, Uracil<\/a> replaces the Thymine<\/a> found in DNA<\/a>. The hydroxyl group at the 2' position of the Ribose<\/a> sugar makes RNA<\/a> more chemically reactive than DNA<\/a>, facilitating its roles in Catalysis<\/a> and rapid degradation within the cell.<\/p>

Major Types of RNA<\/a><\/h2>

Biological systems utilize several specialized types of RNA<\/a> to execute Gene Expression<\/a>:<\/p>