the energy is contained in food molecules which is released by an enzyme system. This occurs in the cytoplasm.
This energy is used for process such as growth and sensetivity.
This process of respiration takes place inside the cell and this is either true in plant and animal cells.
Aerobic and Anarobic respiration
A celll carrying out Aerobic respiration will break down the food molecules and release the energy to do this it requires a enzyme system. Aerobic respiration requires that the cell is provided with oxygen and that it will exctrete carbon dioxide
A celll carrying out Anarobic respiration will break down the food molecules and release the energy. But as in aerobic is that it doesn't require oxygen. Also Anarobic respiration produces less energy.
Word equation for Aerobic respiration:
Glucose + Oxygen ---> Energy + Carbon dioxide + Water
Chemical equation for Anarobic:
C6 H12 o6 + 6o2 ---> Energy + 6Co2 + 6H120
Glucose + Lactic acid +Energy
Glucose + Ethanol + Carbon dioxide + Energy