Answer :A half- life is the time required for half of the radioactive substance to undergo radioactive decay. In two half lives first half of the original sample decays then in the second half life half of what is left decays.25%
Explanation:
Tarsiers I believe is the correct answer.
An ion (hydrogen ions, H⁺) gradient has potential energy which can be used for making ATP. Because of the proton gradient, H⁺ will diffuse from an area with higher proton concentration to an area with lower proton concentration. ATP synthase is the enzyme which allows protons to pass through the membrane and uses the free energy difference to convert ADP into ATP.
The p<span>roton gradient is made by electron transport chain which pumps H</span>⁺<span>.</span>
