Multiple Choice
Which of the following statements is true regarding osmosis?
14. Solutions
Osmosis
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Which term refers to the diffusion of water across a selectively permeable membrane?
A
Active transport
B
Facilitated diffusion
C
Diffusion
D
Osmosis
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 term 'selectively permeable membrane': This is a membrane that allows certain molecules or ions to pass through it by diffusion and occasionally specialized 'facilitated diffusion'.
Define 'osmosis': Osmosis is the process by which water molecules move from an area of lower solute concentration to an area of higher solute concentration through a selectively permeable membrane.
Differentiate between the terms: Active transport requires energy to move substances against a concentration gradient, facilitated diffusion involves the passive movement of molecules along the concentration gradient with the help of a protein, and simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration without the need for a membrane.
Conclude with the correct term: Based on the definitions, the diffusion of water across a selectively permeable membrane is specifically referred to as 'osmosis'.
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