ECOLOGY
EXCRETORY PRODUCTS AND THEIR ELIMINATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Smaller Molecules
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Larger Surface Area
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Smaller Concentration Gradient
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Higher Temperature
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Detailed explanation-1: -Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. Solvent density: As the density of a solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium.
Detailed explanation-2: -The rate of diffusion is directly proportional to the concentration gradient. Higher the concentration gradient, the faster the rate of diffusion.
Detailed explanation-3: -The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse.
Detailed explanation-4: -Difference in concentration affects the rate of diffusion. The greater the concentration gradient, the quicker diffusion takes place. For example, if there is a very high concentration of oxygen in the alveoli, and a very low concentration in the blood, diffusion will take place very quickly.