Lesson 6 Membrane Transport

  Importance of the Cell Membrane

As we have seen, the cell membrane is an important structure for a cell.

All cells have membranes and the membrane is involved in containing the inside of the cell and protecting the cell. Based on its structure, it allows certain particles in while keeping others out. The cell membrane does this through two main types of transport: passive and active transport. Passive transport does not require energy, and active transport does require energy. Diffusion, facilitated diffusion, and osmosis are all types of passive transport. Active transport, endocytosis, and exocytosis are types of active transport.

In the next lesson, we will apply this knowledge to determine what the ideal size of a cell is.

  Watch This

Cell Membranes and Cell Transport © YouTube Amoeba Sisters 

Watch this video for an overview of what we have learned in this lesson. The video goes through the structure of the cell membrane as well as the different kinds of transport across the membrane.