IB Biology Topic C4.2: Transfer of Energy and Matter Notes

C4.2.1 Ecosystems

5 minute read

C4.2.2 Sunlight

4 minute read

C4.2.3 Flow of chemical energy through food chains

4 minute read

C4.2.4 Construction of food chains and food webs

6 minute read

C4.2.5 Supply of energy to decomposers

5 minute read

C4.2.6 Autotrophs

3 minute read

C4.2.7 Use of light as the external energy source

5 minute read

C4.2.8 Heterotrophs

5 minute read

C4.2.9 Release of energy in both autotrophs and heterotrophs

3 minute read

C4.2.10 Classification of organisms into trophic levels

4 minute read

C4.2.11 Construction of energy pyramids

4 minute read

C4.2.12 Reductions in energy availability at each successive stage in food chains

4 minute read

C4.2.13 Heat loss to the environment in both autotrophs and heterotrophs

4 minute read

C4.2.14 Restrictions on the number of trophic levels in ecosystems

2 minute read

C4.2.15 Primary production as accumulation of carbon compounds in biomass by autotrophs

3 minute read

C4.2.16 Secondary production as accumulation of carbon compounds in biomass by heterotrophs

2 minute read

C4.2.17 Constructing carbon cycle diagrams

4 minute read

C4.2.18 Ecosystems as carbon sinks and carbon sources

4 minute read

C4.2.19 Release of carbon dioxide into the atmosphere during combustion

5 minute read

C4.2.20 Analysis of the Keeling Curve in terms of photosynthesis, respiration and combustion

5 minute read

C4.2.21 Dependence of aerobic respiration on atmospheric oxygen produced by photosynthesis

5 minute read

C4.2.22 Recycling of all chemical elements required by living organisms in ecosystems

5 minute read