(Q101) The decrease in the proton concentration in the matrix as a result of electrons moving through Complex IV of the electron transport chain results from: ATP hydrolysis Movement from Complex IV to Complex III O Both the reduction of molecular oxygen and from protons being pumped into the intermembrane space Protons being pumped out of the mitochondrial matrix The reduction of molecular oxygen

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A:

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A: ATP  ATP or adenosine Triphosphate is the energy currency of the cell.

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A: INTRODUCTION Potential energy is stored in living cells in the form of ATP.

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Q: electron transport chain

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.