Formation of Phosphodiester Linkage | Nucleotides & ATP | Class 11 Biology | New PTB Book 2025

In this lecture, we explore the chemistry of nucleic acids, specifically focusing on the Formation of the Phosphodiester Linkage. Learn how phosphoric acid creates an ester bridge between the C-5 and C-3 of pentose sugars to form polynucleotide chains. Key Concepts Explained: Phosphodiester Bond: How nucleotides join to form DNA and RNA chains. Structural Difference: Ribonucleotides (RNA) vs. Deoxyribonucleotides (DNA). 5’ and 3’ Ends: Understanding the polarity of polynucleotide chains. Important Nucleotides: The role of ATP as the "energy currency" of the cell. Co-enzymes: The function of NAD as a hydrogen acceptor in redox reactions. This content is strictly aligned with the National Curriculum of Pakistan (NCP) 2025 for F.Sc 1st Year Biology. Subscribe to BISM ACADEMY for more high-quality biology tutorials. #PhosphodiesterLinkage #Nucleotides #Class11Biology #FScBiology #NewPTBBook2025 #BiologyChapter4 #NationalCurriculumPakistan #NCP2025 #BismAcademy #DNAStructure #RNAStructure #ATP #EnergyCurrency #NAD #Coenzymes #Biomolecules #PunjabTextBook #BiologyLectures #FScPart1 #ScienceEducation #BiologyNotes #MDCATBiology #GeneticsBasics #PentoseSugar #PhosphoricAcid #NucleicAcids #Deoxyribonucleotides #Ribonucleotides #MolecularBiology #BiologyConcepts #ExamPrep2025 #BiologyClass11 #ScienceStudents #StudyBiology #Biochemistry #CellularEnergy #RedoxReactions #DNAHelix #5Prime #3Prime #PolynucleotideChain #ChemistryOfLife #BiologyStudents #EducationPakistan #AcademicSuccess #BiologyTutorials #Bhakkar #BiologySimplified #BioMolecules #LifeScience