Energy from food

The food you eat provides a source of stored energy. This energy is released inside each living cell by a process called respiration. Different foods provide different amounts of energy. This chart shows how many kiloJoules (kJ) of energy are in 100g of each food.

Food	Energy	Food	Energy
potatoes	210 kJ	eggs	610 kJ
milk	270 kJ	bread	920 kJ
fish	320 kJ	cake	1600 kJ
tuna fish	450 kJ	cheese	1680 kJ
chicken	600 kJ	butter	3051 kJ