Water & its Functions (AQA A-Level Biology): Flashcards
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Practise the cards
10 cards from this deck
Dipolar nature of water
Dipolar nature of water
Uneven charge: O slightly negative, H slightly positive
Hydrogen bonds in water
Hydrogen bonds in water
Attractions between +/- regions of molecules
High specific heat capacity cause
High specific heat capacity cause
Hydrogen bonds need substantial energy to break
Latent heat of vaporisation
Latent heat of vaporisation
Energy needed to convert liquid water to vapour
Cohesion
Cohesion
Molecules stick together via hydrogen bonding
Water % in mammals
Water % in mammals
Typically 65%
Hydrolysis
Hydrolysis
Reactions using water to break down complex molecules
Water as solvent
Water as solvent
Dissolves gases, ions, & hydrophilic molecules
Iron ions function
Iron ions function
Transport oxygen in haemoglobin
Phosphate ions function
Phosphate ions function
DNA structure & ATP energy storage