Biochemistry Notes: Nucleic Acids

The Molecular Architecture of Nucleic Acids (Complete Notes)

Master the blueprint of life: from the chemistry of a single nucleotide to the forces holding the Double Helix together.

📂 Topics Covered:

1. The Building Blocks: Nitrogenous Bases (Purines vs. Pyrimidines), Pentose Sugars (Ribose vs. Deoxyribose), and Phosphates.
2. The Backbone: How Phosphodiester bonds link nucleotides with 5' $\to$ 3' directionality.
3. The Double Helix: Watson-Crick base pairing, Antiparallel strands, and the critical role of Base Stacking.
4. DNA Forms: Comparing A-DNA, B-DNA (Canonical), and Z-DNA.
5. Stability: Why DNA is chemically more stable than RNA (the 2'-OH nucleophile problem) and the Hypochromic Effect (UV absorption).

✅ Perfect for: NEET/CSIR-NET aspirants needing structural clarity on Genetics and Biochemistry.