Enzymes are sensitive to

Select the incorrect statement regarding the given graph.

The rate of enzyme reactions rises with the increase in substrate concentration. But it does $NOT$ increase beyond a certain concentration because . . . . . . .

At temperatures below the freezing point,an enzyme is .........

Which enzymes are responsible for changing the arrangement of atoms in substrate molecules?

In homeotherms,the enzymatic reaction occurs best at . . . . . . °$C$.