If a cell needs to transport a certain ion across its cell membrane, which of the following situations can you conclude that energy must be used? The ion is moving from low to high concentration
The ion is moving from the outside of the cell to the inside
The ion is moving from the inside of the cell to the outside
The ion is moving from high to low concentration

thr ion is moving from low to high concentration

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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