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Salutations!

What is the cell membrane primarily made of?

The cell membrane is primarily composed of phospholipid and proteins. The basic function of a cell membrane is to oversee certain substances, typically acting like a sensor. 

→ What is the cell wall primarily made of?

The cell wall is primarily composed of cellulose. The function of a cell wall is to help give the plant cell a rigid shape. Remember -- cell wall is only found in the plant cell.

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