6(a)
6(a) Food production
9 specification points in sub-topic 6(a).
Specification points
6.16.26.36.46.56.66.76.86.9B
6.1: Glasshouses and polythene tunnels
How glasshouses and polythene tunnels increase crop yield.
6.2: Carbon dioxide, temperature and crop yield
How extra carbon dioxide and warmth in a glasshouse raise crop yield, and their limits.
6.3: Fertiliser and crop yield
How fertilisers supply mineral ions that increase crop yield.
6.4: Pest control
Pesticides and biological control compared as ways to protect crops from pests.
6.5: Yeast and bread
How yeast respires anaerobically to make bread dough rise.
6.6: Anaerobic respiration by yeast
Practical: how temperature or sugar concentration affects the rate of respiration in yeast.
6.7: Lactobacillus and yoghurt
How Lactobacillus bacteria turn milk into yoghurt.
6.8: Industrial fermenters
How industrial fermenters keep conditions right for microorganisms to grow.
6.9B: Fish farming
How fish farms control water quality, disease, feeding and breeding to produce protein.