National 5 Cell structure The functions of cell organelles Cells are microscopic building blocks of unicellular and multicellular living organisms.

Cell Energy and Cell Functions Cells manage a wide range of functions in their tiny package — growing, moving, housekeeping, and so on — and most of those functions require energy.

Cell Membranes Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in.

Idaho authorities investigate apparent leaked jailhouse video showing convicted murderer Bryan Kohberger in his maximum security cell, calling it a policy violation.

The footage began circulating on social media Thursday and appears to depict Kohberger in prison clothing walking back and forth in a cell.

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