Anaerobic Respiration: release of a relatively smallamount of energy by the breakdown of food substances in the absence of oxygen.
Aerobic respiration: release of a relatively largeamount of energy in cells by the breakdown of food substances in the presenceofoxygen.
Respiration: chemicalreactions that break down nutrient molecules in living cells to release energy. Respiration involves the action of enzymes in cells
upper nose
nasal cavity
pharynx
lower larynx
trachea
brachial tubes
lungs
When we eat food containing carbohydrates, our digestive system breaks the carbohydrates down to a kind of sugar called glucose
Glucose goes into our blood and is delivered to every cell in the body
Cells use glucose to get the energy they need
Energy in glucose is locked up inside it before it can be used by cells
Mitochondria, tiny structures found inside cells, release energy from glucose so that cells can use it
Most cells have many mitochondria inside them
Mitochondria carry out a chemical reaction called aerobic respiration, which uses oxygen from the air
