Substance X is more concentrated outside the cell than inside the cell. Substance Z is more concentrated inside the cell than outside the cell. Assume that both substances can pass freely through the cell membrane. Over time, what will happen?

Substance Z is more concentrated inside the cell than outside the cell. Assume that both substances can pass freely through the

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

a physical change is being made.