Biological Molecules

HideShow resource information
View mindmap
  • Biological Molecules
    • WATER
      • H20
      • Reactant
      • Transport medium
      • Liquid at room temperature
      • Solvent
        • Polar - the charge on the molecule is not evenly distributed
        • Allows ions to dissolve but NOT LIPIDS
      • High specific heat capacity (4.2kJ/1KG to raise 1 degrees C
      • High latent heat of vaporisation
      • OSMOSIS
        • Water crosses a partially permeable membrane from a region of high water potential to a region of low water potential.
        • Presence of solutes lowers water potential
        • Tension lowers water potential
        • Capillary action lowers water potential
        • Water vapour has a lower water potential as it has a lower concentration
        • Pressure raises water potential
    • ELEMENTS
      • Potassium
        • Salts are very soluble
        • Functioning of nerves and muscles
        • Osmoticlly acticve
        • Reduces water potential
          • OSMOSIS
            • Water crosses a partially permeable membrane from a region of high water potential to a region of low water potential.
            • Presence of solutes lowers water potential
            • Tension lowers water potential
            • Capillary action lowers water potential
            • Water vapour has a lower water potential as it has a lower concentration
            • Pressure raises water potential
      • Calcium
        • Salts are insoluble
        • Bones and teeth
          • Complex salt of phosphorous
        • Calcium pectate acts as a glue e.g. in plant cell walls
      • Magnesium
        • Metal ion in chlorophyll
        • mineral component of bones and teeth
      • Iron
        • Haemoglobin
        • Involved in the cytochromes involved in electron transport chain in respiration
      • Nitrates
        • Amino acids
        • Nucleotides
        • Nucleic acids
        • In chlorophyll and haem molecules
      • Phosphates
        • Nucleic acids
        • Calcium salt in bones and teeth
        • Phospholipid
          • Fat and phosphate
            • Cell membrane
      • Buffers
        • Combinations of chemical compounds
        • Blood has a buffer system
          • Mixture of NaHCO3 and H2CO3

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biological molecules resources »