Amino Acids, Proteins & DNA | A Level Chemistry | Ultimate Guide

Explore More & Full Notes 📄 All A Level Chemistry Videos: https://drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view 📝 Download the full notes PDF of this lesson: https://payhip.com/b/JA9hg Tip: These are exact copies of the handwritten notes used in the video — includes slides, reaction summaries, diagrams, and rules for Period 3 oxides, perfect for revision and exam practice. Amino Acids, Proteins, Enzymes and DNA | A Level Chemistry | Ultimate Guide This A Level Chemistry Ultimate Guide explains everything you need to know about amino acids, proteins, enzymes, and DNA — from zwitterions and peptide links to enzyme catalysis and the structure of nucleotides. Perfect for AQA A Level Chemistry (but also suitable for OCR and Edexcel), this comprehensive video breaks down one of the most important Organic Chemistry Year 2 topics, linking ideas across biological and physical chemistry in a clear, structured way. By the end of this lesson, you’ll understand how amino acids form peptides and proteins, how enzymes work as biological catalysts, and how DNA stores and transmits genetic information. Ideal for exam preparation and synoptic revision. ⏱️ Timestamps: 00:05 – Introduction 00:24 – What are amino acids? 01:41 – Examples of amino acids 03:07 – IUPAC names for amino acids 05:15 – Zwitterions 07:16 – Amino acid chirality 08:44 – Acidic solution and amino acids 10:28 – Alkaline solution and amino acids 11:44 – Reactions of amino acids 13:58 – Proteins 15:16 – Peptides 17:06 – Drawing tripeptides 18:06 – Zwitterions from peptides 19:31 – The huge variety of proteins 20:33 – Primary structure of proteins 22:06 – Drawing a section of a protein 23:36 – Hydrogen bonding within a protein 26:06 – Disulfide bridges in a protein 27:23 – Ionic bonding in a protein 28:33 – Secondary structure of proteins 30:07 – Tertiary structure of proteins 31:47 – Enzymes 33:44 – Drugs that inhibit enzyme action 35:04 – Enzymes and optical isomerism 36:41 – Hydrolysis of the peptide link 38:33 – Thin Layer Chromatography (TLC) 40:48 – Rf value and chromatograms 42:44 – Why amino acids have different Rf values 44:32 – Using 2 different solvents in TLC 46:49 – DNA 48:00 – Nucleotides 49:03 – Forming and combining nucleotides 50:15 – The 4 different bases 51:38 – Hydrogen bonding between bases 54:00 – Nucleotide exam questions 55:55 – Cisplatin 57:07 – How cisplatin works 📘 Comprehensive Overview: In this video, we explore: 🧬 The structure and naming of amino acids ⚗️ How amino acids behave in acids and alkalis 🔗 Peptide bond formation and protein structure 🧩 The role of enzymes and inhibitors in reactions 💊 The action of cisplatin as an anti-cancer drug 🧫 Chromatography and analysing amino acids 🧠 The structure and bonding in DNA 🔗 Explore More A Level Chemistry Help: PDF Links Document: Access all topic videos in one place → https://drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view 📲 Connect with Us: 📸 Instagram: @chemistrytutor123 🎵 TikTok: @chemistrytutor123 📧 Email: thechemistrytutor123@gmail.com 🏷️ Hashtags: #ALevelChemistry #AQAChemistry #OrganicChemistry #AminoAcids #Proteins #Enzymes #DNA #Cisplatin #Peptides #ChemistryRevision #StudySmart #Biomolecules #AminoAcidsAndProteins