AQA A Level Biology復(fù)習(xí)筆記5.3.9 Percentage Yield
Maths Skill: Calculating Percentage Yield Farmers use various strategies to increase the?yield?of their crops or livestock. These strategies include: Reducing energy losses?from crops to?oth...
AQA A Level Biology復(fù)習(xí)筆記5.3.8 Calculating Productivity & Efficiency
Maths Skills: Calculating Productivity and Efficiency within Ecosystems Given the appropriate data, it is possible to calculate the?net productivity?of?producers?or?consumers?and the?efficie...
AQA A Level Biology復(fù)習(xí)筆記5.3.7 Secondary Productivity
Primary & Secondary Productivity During photosynthesis, primary producers (such as plants and algae) convert light energy into chemical energy in biological molecules The storing of this...
AQA A Level Biology復(fù)習(xí)筆記5.3.6 Trophic Levels
Trophic Levels Net primary production (NPP) is the chemical energy that is?stored?in the plant’s?biomass?(after?respiratory losses have been taken into account) This means NPP is the energy ...
AQA A Level Biology復(fù)習(xí)筆記5.3.5 Net Primary Production
Net Primary Production During photosynthesis, primary?producers?(such as plants and algae) convert light energy into chemical energy in biological molecules Gross primary production?(GPP) ca...
AQA A Level Biology復(fù)習(xí)筆記5.3.4 Gross Primary Production
Gross Primary Production During?photosynthesis, primary?producers?(such as plants and algae) convert?light?energy to?chemical?energy stored within?biological molecules Gross primary producti...
AQA A Level Biology復(fù)習(xí)筆記5.3.3 Biomass
Biomass The?biomass?of an organism (or of a sample of tissue from an organism) is: The mass of?living material?of the organism or tissue The?chemical energy?that is?stored?within the organis...
AQA A Level Biology復(fù)習(xí)筆記5.3.2 Photosynthetic Products
Photosynthetic Products The process of photosynthesis transfers?light energy?to?chemical energy?in biological molecules In ecosystems where?sunlight?and?water?is available, the process of ph...
AQA A Level Biology復(fù)習(xí)筆記5.2.9 Investigating the Rate of Respiration
Required Practical: Investigating the Effect on the Rate of Respiration A?redox indicator?is a substance that changes colour when it is reduced or oxidised DCPIP?and?methylene?blue are redox...
