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Class: 9th
Subject: Biology
Chapter: The Fundamental Unit of Life
Topic Name: Movement Across Cell Membrane (1.5)
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Points covered in this video:-
– What is diffusion?
– How does diffusion happen?
“A spontaneous movement of molecules from a region of high concentration to lower concentration.”
Rate of diffusion –
Gases ＞ Liquids ＞ Soilds
Showed by small size substances
Examples: ions/molecules, CO2, Oxygen, Water
Due to cellular activities, CO2 production takes place.
