Exchange with the Environment

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What structures allow small particles to cross cell membranes?

The movement of water through a membrane

The movement of particles from regions of higher density to regions of lower density

The process by which a cell gets rid of large particles

The movement of substances through a cell membrane without the use of cell energy

The process by which a cell membrane surrounds and encloses a large particle to bring it into the cell

The movement of substances through a cell membrane with the use of cell energy

The sac formed around a large particle to allow a cell to take in or remove the particle