What is the primary function of the cell membrane?
Cell Membrane & Cell Transport

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Biology
•
9th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The cell membrane regulates what enters and exits the cell, providing protection and support.
2.
FLASHCARD QUESTION
Front
Define osmosis.
Back
Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
3.
FLASHCARD QUESTION
Front
What is the difference between hydrophilic and hydrophobic substances?
Back
Hydrophilic substances are attracted to water (water-loving), while hydrophobic substances repel water (water-fearing).
4.
FLASHCARD QUESTION
Front
What are the two main components of a phospholipid?
Back
The two main components of a phospholipid are the hydrophilic head and the hydrophobic tail.
5.
FLASHCARD QUESTION
Front
What types of molecules can easily diffuse through the phospholipid bilayer?
Back
Small nonpolar molecules, such as oxygen and carbon dioxide, can easily diffuse through the phospholipid bilayer.
6.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is the process by which molecules pass through the cell membrane via special proteins without the use of energy.
7.
FLASHCARD QUESTION
Front
What role do proteins play in the cell membrane?
Back
Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.
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