EnergyMetabolism/NutrientAndEnergy/ChemicalEnergyOfNutrient

To obtain energy, cells take in nutrients 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, hydrogen, oxygen atoms and can be equally divided into two.

Challenge Quiz

1.

For muscle cells to contract, it is neccesary for the nutrient to be kept outside of the muscle cell to enter inside the cell from outisde of the muscle cell  正解!.

2.

Chemical energy, such as the muscle contraction are used inside of the atom connecting atom to one molecule  正解! of the nutrient.

3.

For muscle contraction, chemical electrical  正解! energy of the nutrient is required