U2 Cells: Cell membrane review Flashcards
1
Q
What is a cell membrane?
A
The cell membrane is a unique structure that surrounds the cells and it’s internal environment, controlling the movement of the substances into an out of the cell.
2
Q
What are the characteristics of the cell membrane?
A
It is semipermeable and consists of a phospholipid bilayer and other lipids, proteins, and carbohydrates.
3
Q
How does it help the cell?
A
The unique structure allows small substances like oxygen or carbon dioxide to easily pass through.
4
Q
What does it contain?
A
The cell membrane contains other macromolecules like membrane proteins and carbohydrates, making it a complex structure that allows certain substances to pass through.
