EnergyMetabolism/NutrientAndEnergy/ChemicalEnergyOfNutrient

To obtain energy, cells take in nurtrients from outside. There is a large amount of energy in the nutrient. The energy is chemical energy, shown in red lines, which connect the atoms, such as carbon (C), hydrogen (H) , and oxygen (O) in the nutrient into one molecule. When a nutrient enters a cell, shown in green arrow, chemical energy of nutirient also enter the cell, as shown in red arrow.

Please be noted that the nutrients shown above, are not carbohydrate nor lipid. This is a fictional nutrient, which has many carbon (C), hydrogen (H), oxygen (O) atoms and can be equally divided into two.