A) \[10-15{{\,}^{o}}C\]
B) \[15-25{{\,}^{o}}C\]
C) \[25-30{{\,}^{o}}C\]
D) \[30-50{{\,}^{o}}C\]
Correct Answer: D
Solution :
Enzymes are thermolabile and their activity increases rapidly \[0{{\,}^{o}}C-35{{\,}^{o}}C.\]In most of the animals, the optimum temperature is between \[25{{\,}^{o}}C-40{{\,}^{o}}C\]for most of the enzymes. Many enzymes stop activity at \[60{{\,}^{o}}C\]and are denatured. The freezing low temperature stops the activity of enzymes as these become metabolically inactive but are not destroyed. It is to be noted, that with rise of \[10{{\,}^{o}}C,\] the reaction rate is doubled while the catalytic activity of enzyme and degree of dispersity of colloids are decreased.
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