Cell Membrane and Transport

Front

The movement of materials through a cell membrane using energy.

Back

Active transport

Front

The movement of substances across a cell membrane without the use of energy by the cell.

Back

Passive Transport

Front

The amount of dissolved materials is equal on both the inside and outside of the cell. The cell will stay the same size.

Back

Isotonic Solution

Front

Environment inside of the cell has more dissolved material than the outside. Water moves into the cell, causing it to swell and possibly burst.

Back

Hypotonic

Front

Environment outside of the cell has more dissolved material than the inside. Water moves out of the cell, causing it to shrink and dehydrate.

Back

Hypertonic

Front

Movement of molecules from an area of higher concentration to an area of lower concentration without energy.

Back

Simple Diffusion

Front

Diffusion of water through a selectively permeable membrane from high to low concentration without energy.

Back

Osmosis

Front

Transport proteins that provide passageways through the membrane for hydrophilic substances such as polar and charged molecules.

Back

Channel proteins

Front

The process where a membrane-bound sac (vesicle) is used to transport substances into a cell.

Back

Endocytosis

Front

Process by which a cell releases large amounts of material from a vacuole/vesicle across the membrane.

Back

Exocytosis