5 Questions
What primarily separates the interior of the cell from the outside environment?
Lipid bilayer
Which type of proteins allow free movement of water, as well as selected ions or molecules through the cell membrane?
Channel proteins
What do carrier proteins bind with for transportation through the cell membrane?
Molecules or ions
What is the main composition of the cell membrane?
Lipid bilayer
What forms a barrier against water molecules and water soluble substances in the cell membrane?
Lipid bilayer
Study Notes
Cell Membrane Structure and Function
- The cell membrane primarily separates the interior of the cell from the outside environment.
- Channel proteins allow free movement of water, as well as selected ions or molecules through the cell membrane.
- Carrier proteins bind with specific molecules or ions for transportation through the cell membrane.
- The main composition of the cell membrane is a phospholipid bilayer.
- The hydrophobic tails of the phospholipid bilayer form a barrier against water molecules and water-soluble substances.
Test your knowledge of cell membranes with this quiz! Learn about the structure and function of the lipid bilayer and protein molecules that make up the cell membrane, and understand how it regulates the flow of substances in and out of the cell.
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