LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
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the diffusion of particles from an area of high concentration to an area of low concentration
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diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
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the diffusion of particles from an area of low concentration to an area of high concentration
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Detailed explanation-1: -Osmosis is a special type of diffusion, namely the diffusion of water across a semipermeable membrane. Water readily crosses a membrane down its potential gradient from high to low potential (Fig. 19.3) [4]. Osmotic pressure is the force required to prevent water movement across the semipermeable membrane.
Detailed explanation-2: -Osmosis happens when molecules move from higher to lower concentrations, but diffusion happens when it is reversed.
Detailed explanation-3: -In the process of diffusion, a substance tends to move from an area of high concentration to an area of low concentration until its concentration becomes equal throughout a space.
Detailed explanation-4: -The movement of water molecule from a region of higher concentration to a region of its lower concentration through a semi permeable membrane is called Osmosis.
Detailed explanation-5: -Osmosis is a specific type of diffusion; it is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration.