What is a hypertonic extracellular solution

A hypertonic solution is a solution where there is more water on the inside of the cell rather than the outside. Therefore, the water moves high to low, going outside the cell. That means that there is less volume inside the cell, and it'll shrink.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

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