The Cell Membrane

The video tutorial explains the structure and functions of the cell membrane, highlighting its role in separating the cell's internal environment from the external one. It discusses the concept of selective permeability, allowing certain molecules like glucose to enter while expelling waste. The video covers passive transport processes such as diffusion and osmosis, which do not require energy, and contrasts them with active transport, which moves substances against a concentration gradient using energy. Active transport is crucial for processes like mineral uptake in root hair cells.

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