Cell Transport

Cell Transport

Cells must move materials in and out to survive. This process, known as cell transport, allows nutrients to enter, waste to exit, and essential molecules to reach their destinations. The cell membrane plays an important role in regulating these movements, ensuring the cell maintains a stable internal environ...

Like a castle wall, the semi-permeable cell membrane guards the entry and exit of substances into and out of the cell.

The phospholipid bilayer allows small molecules like oxygen and carbon dioxide to diffuse freely.

For ions and larger molecules, like glucose and starch, specialized proteins called carrier proteins and channels hel...