Plasma membrane Flashcards
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What model describes the structure of the plasma membrane?
The fluid mosaic model.
What is the role of phospholipids in the plasma membrane?
They form a bilayer that controls what enters and exits the cell.
How do glycoproteins function in the plasma membrane?
They are involved in cell recognition, signaling, and receptor functions.
What is the function of cholesterol in the plasma membrane?
It maintains membrane stability and fluidity.
Describe the difference between integral and peripheral proteins.
Integral proteins span the membrane, while peripheral proteins are attached to the surface.
How does the plasma membrane regulate transport in and out of the cell?
It is partially permeable, allowing selective substances to pass through.
What does “partially permeable” mean?
Only certain molecules can pass through, depending on size and polarity.
What are glycolipids, and their function in the plasma membrane?
They are phospholipids with carbohydrate chains that help in cell recognition and signaling.
