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Draw a picture of what diffusion looks like.
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What do you think the term "selectively permeable" is referring to about the cell membrane?
After watching the cell membrane video, write down two things you learned from the video.

Answer 1

The cell membrane is selectively permeable, allowing certain substances to pass through while preventing others.

Step-by-step explanation:

Cell Membrane and Selectively Permeable

The term 'selectively permeable' refers to the property of the cell membrane that allows certain substances to pass through while preventing others. The cell membrane acts as a barrier and controls the movement of molecules into and out of the cell. It consists of a phospholipid bilayer with embedded proteins that regulate the transport of ions, water, and other molecules.

For example, small molecules like oxygen and carbon dioxide can diffuse across the cell membrane through simple diffusion. Larger molecules or charged ions may require specific transport proteins or channels to cross the membrane.

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