water
- Created by: Margaret Hobart
- Created on: 27-04-21 08:53
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- water
- water is a metabolite
- e.g. condensation and hydrolysis
- hydrolysis: needs water to break bond
- energy from ATP is released through hydrolysis
- condensation: releases water when new bond formed
- joining of amino acids
- hydrolysis: needs water to break bond
- e.g. condensation and hydrolysis
- solvent
- lots of important substances in metabolic reactions are ionic
- water is polar and so the positive end of a water molecule will be attracted to the negative ion and visa versa
- ions will ge totally surrounded by water molecules - they'll dissolve
- high latent heat capacity
- resists changes in temp
- H bonds absorb a lot of energy so takes a lot of energy to heat up
- useful for living organisms
- temp is more stable than on land
- water inside organisms is constant so they have a constant internal body temp
- high latent heat vaporisation
- provides cooling affect with little loss of water through evaporation
- takes lots of energy to break H bonds
- useful for living organisms
- can use evaporation to cool down without losing too much water
- provides cooling affect with little loss of water through evaporation
- strong cohesion
- cohesion is the attraction between molecules of the same type.
- water molecules are 'sticky' because they're polar
- strong cohesion helps water flow so good for transport e.g. water travels up xylem in plants
- high surface tension when in contact with air.
- this is why it forms droplets
- e.g. pond skates 'walk' on water
- cohesion is the attraction between molecules of the same type.
- water is a metabolite
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