What is the cell membrane?
Cell Membrane and Cell Transport

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•
Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The cell membrane is a biological barrier that separates the interior of the cell from the external environment, controlling the movement of substances in and out of the cell.
2.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is a type of passive transport that uses specific proteins to help move molecules across the cell membrane without using energy.
3.
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) to do so.
4.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
5.
FLASHCARD QUESTION
Front
What is a hypertonic solution?
Back
A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell and leading to cell shrinkage.
6.
FLASHCARD QUESTION
Front
What is a hypotonic solution?
Back
A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell and potentially leading to cell swelling or bursting.
7.
FLASHCARD QUESTION
Front
What is isotonic solution?
Back
An isotonic solution has an equal concentration of solutes inside and outside the cell, resulting in no net movement of water.
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