What is the function of the cell membrane?
Cell Membrane and Transport

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•
Science, Biology
•
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 facilitated diffusion.
Back
Facilitated diffusion is a type of passive transport that uses channel or carrier proteins to help move substances across the cell membrane without energy.
3.
FLASHCARD QUESTION
Front
What are channel proteins?
Back
Channel proteins are integral membrane proteins that form pores in the cell membrane, allowing specific molecules to pass through.
4.
FLASHCARD QUESTION
Front
What does hypotonic mean in relation to cell solutions?
Back
A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell and potentially leading to swelling.
5.
FLASHCARD QUESTION
Front
What is the difference between hydrophobic and hydrophilic substances?
Back
Hydrophobic substances repel water and do not mix with it, while hydrophilic substances are attracted to water and can dissolve in it.
6.
FLASHCARD QUESTION
Front
What is passive transport?
Back
Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.
7.
FLASHCARD QUESTION
Front
Explain the role of carrier proteins in facilitated diffusion.
Back
Carrier proteins bind to specific molecules and change shape to transport them across the cell membrane.
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