Cell Transport

Biology - High School


Table Of Contents: Cell Transport

1. Cell Membrane
Each cell is surrounded by a cell membrane which provides structure and controls the passage of materials between the cell and its environment.
2. Cell Membrane Composition
A cell membrane consists of two layers composed of proteins and lipids.
3. Semi-Permeable Cell Membrane
A cell membrane is known as a semi-permeable membrane since it only allows certain substances to move into and out of the cell.