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What respiration does

What respiration does

Flowchart of glucose being broken down by glycolysis in the cytoplasm, then link reaction, Krebs cycle and oxidative phosphorylation in the mitochondrion, with an anaerobic branch from pyruvate to lactate

Respiration is the enzyme-controlled process that transfers energy from a respiratory substrate into ATP. ATP is the immediate energy-transfer molecule used in muscle contraction, active transport, and biosynthesis.

Aerobic and anaerobic respiration Lesson

  1. A Level
  2. /Biology
  3. /Aerobic and anaerobic respiration

Step-by-step lessons covering Edexcel A A Level Biology Aerobic and anaerobic respiration for A Level Biology. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lessons