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Rennin is an enzyme that converts the soluble milk protein caseinogen into the insoluble protein paracasein, producing the curd that can be processed into cheese or other milk products. Inorganic ions such as metal ions can act as cofactors. The ion may combine with either the enzyme or the substrate to reduce the activation energy. These ions are called activators. Activators are thought to make the enzyme substrate complex form more easily. For example, the action of amylase on starch is quicker in the presence of chloride ions. Calcium ions are required to activate the enzyme rennin. In this demonstration, calcium ion is removed by precipitating it as calcium citrate. In the tube containing the sodium citrate, calcium citrate forms as a precipitate. what effect changing the concentration of calcium ions has on the rate of coagulation of milk how calcium ions influece the activity of rennin in bringing about the coagulation of milk because it does

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What effect does changing the concentration of calcium ions have on the coagulation of milk?

the rate of coagulation increases as the concentration of calcium ions increase.


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What equipment should be used when investigating the effect concentration of calcium ions has on the rate of coagulation of milk?

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For the enzyme to work, its particles must collide with the particles of the substrate. The more particles there are per unit volume, the more frequent the collisions will be. Thus changing the concentration of either chemical will have the same effect.


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Increasing the concentration of an acid would increase the rate and vigor of the reaction involving a metal such as magnesium.


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Changing the concentration of S2O8^2- ion in a reaction can affect the reaction rate. Increasing the concentration of S2O8^2- typically results in a faster reaction rate because there are more reactant particles available to collide and react. Conversely, decreasing the S2O8^2- concentration can slow down the reaction as there are fewer reactant particles available to collide.


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