A-Level Biology - Transcription | Sense & Antisense Strands (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. The Role of Transcription in Protein Synthesis The function of transcription in creating an mRNA copy of a gene. Where transcription occurs within a eukaryotic cell. 2. The Process of Transcription The function of the enzyme RNA polymerase. How the DNA double helix unwinds to expose the antisense template strand. The alignment of free RNA nucleotides through complementary base pairing. The formation of phosphodiester bonds to create the mRNA backbone. Termination of transcription and release of the mRNA strand. 3. Post-transcriptional Modification: Splicing The definition of introns (non-coding regions) and exons (coding regions). How pre-mRNA is modified into mature mRNA by removing introns. The difference in transcription between eukaryotic and prokaryotic cells. ** CHAPTERS ** 0:00 Introduction 0:21 What is Transcription? 1:04 The Key Stages of Transcription 3:48 What is Splicing? ** PLAYLISTS **    • KS3 Biology      • KS3 Chemistry      • GCSE Maths (9-1)      • GCSE Biology (9-1)      • GCSE Chemistry (9-1)      • GCSE Physics (9-1)      • A-Level Biology   #Alevel #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE #IB #AP