A-Level Biology - 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 *** https://youtube.com/playlist?list=PLidqqIGKox7VzYfPIVt8T09xOLNcolCe4&si=8JmDajxjtba6rdc3 https://youtube.com/playlist?list=PLidqqIGKox7UZ3mWhbHv2aA_1vnbsfRPq&si=q3hEKdA4v7kbfwMe https://youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh&si=orIUwL3o2jOoiYjT https://youtube.com/playlist?list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g&si=DcihOwUkd9oWbbdp https://youtube.com/playlist?list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W&si=Y8MsO-FK948jnxpS https://youtube.com/playlist?list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7&si=-7i5Iq7yOeJrhtu6 https://youtube.com/playlist?list=PLidqqIGKox7VKJD2WxRhoKaI6JGLVean8&si=NH_Q1ujhVgACM2FU #Alevel #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE #IB #AP