In an amylase activity experiment, which statement correctly summarizes the effect of boiling and freezing?

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Multiple Choice

In an amylase activity experiment, which statement correctly summarizes the effect of boiling and freezing?

Explanation:
Temperature controls enzyme activity by affecting both structure and reaction rate. Boiling provides enough energy to disrupt the enzyme’s folded shape, denaturing amylase and destroying the active site, so its ability to catalyze starch breakdown drops dramatically. Freezing, on the other hand, slows molecular motion and reaction rates but doesn’t permanently alter the enzyme’s structure; once warmed back to optimal conditions, amylase can regain its activity. So the statement that boiling decreases activity while freezing has no lasting effect best captures these effects.

Temperature controls enzyme activity by affecting both structure and reaction rate. Boiling provides enough energy to disrupt the enzyme’s folded shape, denaturing amylase and destroying the active site, so its ability to catalyze starch breakdown drops dramatically. Freezing, on the other hand, slows molecular motion and reaction rates but doesn’t permanently alter the enzyme’s structure; once warmed back to optimal conditions, amylase can regain its activity. So the statement that boiling decreases activity while freezing has no lasting effect best captures these effects.

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