Use of Biological Resources · 3 question types
Past paper frequency (2018 to 2024)
This topic accounts for approximately 7% of your exam marks.
Microorganisms in food production (yeast, yoghurt, fermenter conditions) and glasshouse/fertiliser yield questions recur across most series.
Producing protein by fish farming (aquaculture) is the other food-production method in this section of the spec. It is dealt with in topic 16 (Human Impact on the Environment), where the methods used to farm fish, control disease and predation, manage feeding and waste, and farm sustainably are covered in full. See that topic for the detail.