What is the primary function of the plasma membrane?
Cell Membrane Structure

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Biology
•
7th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
To regulate what enters and leaves the cell.
2.
FLASHCARD QUESTION
Front
How many layers make up the phospholipid bilayer?
Back
2
3.
FLASHCARD QUESTION
Front
Which of the following is NOT true about the cell membrane?
Back
Contains digestive enzymes.
4.
FLASHCARD QUESTION
Front
What do channel proteins do in the cell membrane?
Back
Facilitate the transport of substances across the membrane.
5.
FLASHCARD QUESTION
Front
What role does cholesterol play in the cell membrane?
Back
Allows the fatty acids not to stick together.
6.
FLASHCARD QUESTION
Front
What are phospholipids composed of?
Back
A hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.
7.
FLASHCARD QUESTION
Front
What is the fluid mosaic model?
Back
A model that describes the structure of the plasma membrane as a mosaic of various components, including phospholipids, cholesterol, and proteins, that move freely.
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