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

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Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The cell membrane controls the movement of substances in and out of the cell, providing protection and support.
2.
FLASHCARD QUESTION
Front
What is Active Transport?
Back
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).
3.
FLASHCARD QUESTION
Front
What is Passive Transport?
Back
Passive transport is the movement of molecules across a cell membrane without the use of energy, occurring along the concentration gradient.
4.
FLASHCARD QUESTION
Front
Define Diffusion.
Back
Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.
5.
FLASHCARD QUESTION
Front
What is Osmosis?
Back
Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.
6.
FLASHCARD QUESTION
Front
What does 'selectively permeable' mean?
Back
Selectively permeable means that a membrane allows certain substances to pass through while blocking others.
7.
FLASHCARD QUESTION
Front
What happens to a cell in a hypertonic solution?
Back
In a hypertonic solution, water moves out of the cell, causing it to shrink.
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