A-Level Biology - A-Level Biology - Water: Structure & Functions (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. The Structure of Water * Covalent bonds between oxygen and hydrogen atoms. * The dipolar nature of water molecules due to uneven electron sharing. * Formation of hydrogen bonds between water molecules. 2. The Functions of Water in Living Organisms * As a solvent for ionic compounds and a metabolite in reactions like hydrolysis and condensation. * As a transport medium, explaining the properties of cohesion and adhesion. * In temperature control, covering its high specific heat capacity and high latent heat of vaporisation. * As a habitat, explaining how its properties create a stable environment and why ice floats. *** CHAPTERS *** 0:00 Introduction to Water 0:27 Structure of a Water Molecule (Covalent Bonds & Polarity) 1:16 Hydrogen Bonding in Water 1:44 Functions of Water Overview 2:00 Water as a Solvent and Metabolite 3:38 Water as a Transport Medium (Cohesion and Adhesion) 4:47 Water's Role in Temperature Control 5:53 Water as a Habitat *** 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