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SAT® Subject Test in Biology

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Increasing Temperature

SATBIO-L3YGYO

An enzyme functions optimally at 37º C. The enzyme is heated to 60º C for a short period of time and then the temperature is returned to 37º C. The rate of the enzyme catalyzed reaction returns to its previous level.

Which best explains whether or not the enzyme denatured?

A

The enzyme denatured because the temperature was raised.

B

The enzyme denatured because the rate of the reaction was affected.

C

The enzyme denatured because its primary structure was destroyed.

D

The enzyme did not denature because the rate of reaction returned to previous levels.

E

The enzyme did not denature because the pH was not changed.