B4g decay

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  • DECAY
    • Conditions
      • Temperature
        • warm temp. speeds up decay
          • Increases rate of respiration in micro-organisms
        • Opt. temp. for enzymes
      • Moisture
        • chemical reactions take place in solution
      • Oxygen
        • for aereobic respiration
      • Decomposers
        • Soil bacteria
          • Chemically break down material
            • Producing
              • Nitrogen based waste
              • CO2
        • Fungi
          • Saprophytes
            • send out hyphae tendrils
              • Secreting digestive enzymes
                • which digests matter for absorbtion
                  • send out hyphae tendrils
                    • Secreting digestive enzymes
                      • which digests matter for absorbtion
      • Feeding on decaying material
        • Saprophytes
          • Detritivores
            • Feed on detritus (decaying material
            • E.g. Maggots, Earthworms and woodlice
            • Break material into smaller pieces
              • Increasing it's surface area
                • Easier for small composers to decay it
                  • Speeds up decay
        • Decomposers
          • Soil bacteria
            • Chemically break down material
              • Producing
                • Nitrogen based waste
                • CO2
          • Fungi
          • Food preservation
            • Canning
              • airtight can
                • no oxygen
                  • decomposers cant reproduce
            • Cooling
              • fridge
                • slows reproduction rate
            • Freezing
              • freezer
                • can't reproduce at low tempreatures
            • Drying
              • e.g. meat and fruit
                • decomposers need water for cell reactions
            • Adding salt/sugar
              • high conc. sugar salt around the decomposers
                • they'll lose water by osmosis and cannot function
            • Adding vinegar
              • vinegar is acidic
                • The acid kills the decomposers

        Comments

        Swallowtail

        A good use of colour to separate the key words in this topic. It would be useful to add images to the mind map after download as this often makes key ideas easier to remember.Try using this alongside some flashcards to learn the key terms.

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