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. Unlike ...

In order to provide a cell with energy, these molecules have to pass across the cell membrane, which functions ... Eukaryotic cells use three major processes to transform the energy held in ...

An animal cell is made of three main parts a nucleus, cell membrane and cytoplasm, which holds the rest of its critical components. And it's so small you could actually fit 100 animal cells across ...

Researchers have produced the most detailed image to date of a bacteriophage -- phage for short -- that has allowed them to see for the first time the structural makeup of the part of the phage that ...