| A | B |
| the diffusion of water through a selectively permeable membrane | osmosis |
| movement of materials through the cell membrane without using energy; molecule move from high to low concentration | passive transport |
| Transport proteins in the cell membrane that use energy to carry materials into the cell | pickup molecules |
| the cell membrane surrounds a particle to bring it inside the cell | engulfing |
| movement of molecules through the cell membrane using energy; molecules move from low to high concentration | active transport |
| the process by which molecules tend to move from high to low concentration | diffusion |
| a cell has water and some salt inside it. When put into pure water it will... | grow |
| A cell has water and a little salt in it. It is put into a strong salt solution. The cell will ... | shrink |
| A cell with water inside is put into an iodine solurion. The cell will... | not change size. Iodine will move into it |