ANIMAL PHYSIOLOGY
GAS EXCHANGE IN DIFFERENT ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The greater the concentration difference the faster the rate
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The smaller the concentration difference the faster the rate
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The greater the concentration the slower the rate
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Detailed explanation-1: -The difference between the concentration of a substance in two areas forms a concentration gradient. The rate of diffusion is directly proportional to the concentration gradient. Higher the concentration gradient, the faster the rate of diffusion.
Detailed explanation-2: -Extent of the concentration gradient: The greater the difference in concentration, the more rapid the diffusion. The closer the distribution of the material gets to equilibrium, the slower the rate of diffusion becomes.
Detailed explanation-3: -The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.
Detailed explanation-4: -Other factors being equal, a stronger concentration gradient (larger concentration difference between regions) results in faster diffusion. Thus, in a single cell, there can be different rates and directions of diffusion for different molecules.