What is the function of membrane transport proteins?

What is the function of membrane transport proteins?

Step 1: Understand that cell membranes are barriers that separate the inside of a cell from the outside environment.
Step 2: Know that some substances, like nutrients and waste, need to move in and out of the cell.
Step 3: Learn that membrane transport proteins are special proteins located in the cell membrane.
Step 4: Recognize that these proteins help substances cross the membrane.
Step 5: Identify that there are two main ways these proteins work: passively (without energy) and actively (using energy).
Step 6: Conclude that the main function of membrane transport proteins is to facilitate the movement of various substances into and out of the cell.

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