Peter Mitchell proposed that an electrochemical concentration gradient of protons across a membrane could be harnessed to make ATP.

ATP synthase then uses the energy stored in this gradient to make ATP.

The process is called cellular respiration, which makes ATP, a molecule which the cell can use as a source of energy.

The resulting proton gradient is used to make ATP.

Lack of oxygen causes the neuron's normal process for making ATP for energy to fail.

Chloroplasts can only be found in plants and algae, and they capture the sun's energy to make ATP.

These electrons move through structures in chloroplasts and by chemiosmosis, make ATP.

Malonic acid is a Krebs cycle inhibitor, preventing the cells to make ATP through oxidation.

In this condition, the cells, to make ATP, are forced to increase glycolysis, which produces lactic acid as a by-product.

The potential energy from the proton gradient is not used to make ATP but generates heat.