ANIMAL PHYSIOLOGY
EXCRETION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An area with a SMALL number of particles
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An area with a LARGE number of particles
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An area with an UNEVEN number of particles
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An area with no particles
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Detailed explanation-1: -A high concentration of a substance in a solution means that there’s a lot of it relative to the volume: the Great Salt Lake has very few fish because of the high concentration of salt.
Detailed explanation-2: -A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
Detailed explanation-3: -If there are more particles within a specific volume, those particles are considered ‘concentrated’. A solution will have a low concentration of solute if there is a high water potential. There is a concentration gradient when there is a region of high concentration, and a region of low concentration.
Detailed explanation-4: -The cell has higher water concentration, which means it has less solute concentration than the surrounding medium. Such, solution is said to be hypertonic. In such a case, the water molecules move from inside to the outside of the cell through the cell membrane.