Explore free A-level Biology revision articles about nutrient cycles, including the nitrogen, phosphorus and carbon cycles and the organisms and processes that move these elements through ecosystems. These explanations can support students studying AQA, OCR A or Edexcel Salters–Nuffield Biology, although the precise content required varies between exam boards.
Nutrient cycles revision articles
- The Nitrogen Cycle – Nutrient Cycles Ep 1
Nitrogen is an essential element for living organisms. It is needed to make proteins, nucleic acids and ATP. The nitrogen cycle shows how this element… Continue Reading → - The Phosphorus Cycle – Nutrient Cycles Ep 2
Phosphorus is another essential element for living organisms. Phosphate ions are needed to make phospholipids, ATP, and nucleotides (the monomers of DNA and RNA). Phosphates… Continue Reading → - The Carbon Cycle – Nutrient Cycles Ep 3
Organisms need carbon to make all sorts of biological molecules including lipids, carbohydrates, and proteins. Just like we saw with nitrogen and phosphorus, carbon is… Continue Reading →
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