Multiple Choice
How is osmosis different from simple diffusion?
14. Solutions
Osmosis
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Which term is used exclusively to describe the movement of water across a selectively permeable membrane?
A
Diffusion
B
Osmosis
C
Active transport
D
Facilitated diffusion
Verified step by step guidance1
Identify the key concept: The problem is asking about the movement of water across a selectively permeable membrane.
Understand the terms: Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. Active transport involves the movement of substances against a concentration gradient, requiring energy. Facilitated diffusion is the passive movement of molecules across a membrane via specific transport proteins.
Focus on the term 'water': Osmosis is a specific type of diffusion that refers exclusively to the movement of water molecules across a selectively permeable membrane.
Recognize the unique aspect of osmosis: Unlike other forms of diffusion, osmosis specifically involves water and does not require energy, as it moves from an area of low solute concentration to an area of high solute concentration.
Conclude with the correct term: Based on the definitions, osmosis is the term that exclusively describes the movement of water across a selectively permeable membrane.
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