i) Briefly explain the difference between anaerobic and aerobic respiration (2). ii) Which of these reactions produce more energy and briefly describe why?(2)

i) Anaerobic and aerobic respiration are both biochemical reactions (see below): ANAEROBIC RESPIRATIONGlucose = lactic acid + energy releasedAEROBIC RESPIRATIONGlucose + oxygen= carbon dioxide + water + energy releasedFor cells to /survive they need to produce energy for themselves. This is called respiration (anaerobic or aerobic)In aerobic respiration glucose and oxygen are needed. In anaerobic respiration only glucose is neededSo when there isn’t enough oxygen available then anaerobic respiration occurs. ii) Aerobic respiration produces more energy. For energy to be released, chemical bonds are broken (see above*). Far less energy is released from each molecule of glucose in anaerobic respiration compared to aerobic respiration . This is because glucose is not completely broken down and a lot of energy remains stored in lactic acid in the form of chemical bond energy