What is diffusion?
Cell Membrane and Cell Transport Flashcard

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Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached.
2.
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.
3.
FLASHCARD QUESTION
Front
What is the main function of the cell membrane?
Back
The main function of the cell membrane is to control the movement of substances in and out of the cell.
4.
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.
5.
FLASHCARD QUESTION
Front
What is active transport?
Back
Active transport is the movement of substances against their concentration gradient, requiring energy (ATP) to occur.
6.
FLASHCARD QUESTION
Front
What is the difference between diffusion and osmosis?
Back
Diffusion refers to the movement of any molecules, while osmosis specifically refers to the movement of water molecules.
7.
FLASHCARD QUESTION
Front
What does it mean for a solution to be isotonic?
Back
An isotonic solution has the same concentration of solutes as another solution, resulting in no net movement of water.
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