What is the cell membrane?
cell membrane & transport

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Biology
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9th - 10th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The cell membrane is a biological membrane that separates and protects the interior of all cells from the outside environment. It is composed of a phospholipid bilayer with embedded proteins.
2.
FLASHCARD QUESTION
Front
What is passive transport?
Back
Passive transport is the movement of substances across a cell membrane without the use of energy. It relies on the concentration gradient.
3.
FLASHCARD QUESTION
Front
What is facilitated diffusion?
Back
Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.
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 endocytosis?
Back
Endocytosis is the process by which cells take in substances by engulfing them in a membrane-bound vesicle.
6.
FLASHCARD QUESTION
Front
What is exocytosis?
Back
Exocytosis is the process by which cells expel materials in vesicles that fuse with the cell membrane, releasing their contents outside the cell.
7.
FLASHCARD QUESTION
Front
What is an isotonic solution?
Back
An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.
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