What is passive transport?
Passive Transport

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Biology
•
9th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.
2.
FLASHCARD QUESTION
Front
What role does the cell membrane play in homeostasis?
Back
The cell membrane controls what substances may enter or leave the cell, helping to maintain a stable internal environment.
3.
FLASHCARD QUESTION
Front
Define selectively permeable in the context of cell membranes.
Back
Selectively permeable means that the cell membrane allows certain substances to pass while blocking others.
4.
FLASHCARD QUESTION
Front
What happens to a cell in a hypotonic solution?
Back
In a hypotonic solution, water enters the cell, causing it to swell and potentially burst.
5.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is the process of molecules diffusing across a membrane through protein channels, moving from an area of higher concentration to lower concentration.
6.
FLASHCARD QUESTION
Front
Explain osmosis.
Back
Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
7.
FLASHCARD QUESTION
Front
What is the difference between simple diffusion and facilitated diffusion?
Back
Simple diffusion occurs directly through the membrane, while facilitated diffusion requires protein channels to help transport molecules.
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