Nat Quiz - 17 May | Take the Quiz

Enzymes are denatured by (Choose 1 or more answer.)

Which of the following is correct about Lock and Key hypothesis?

Substrate's shape is complementary to that of enzyme and fits exactly

Substrate's shape is complementary to that of enzyme but does not fit exactly

Substrate's shape is not complementary to that of enzymes

Substrate's shape is complementary to that of enzyme and fits exactly, causing enzyme to change shape

Which of the following statements about denaturation is correct? Choose 1 or more answer.

Denaturation is generally irreversible

Denaturation results in a change in the specific shape of active site

Denaturation is generally reversible

Denaturation can cause soluble proteins to turn into insoluble proteins

Which of the statements explain why enzyme activity decrease beyond optimum temperature? Choose 1 or more answer.

Activation energy decreases

Kinetic energy becomes too high

Substrate are not complementary to shape of enzyme's active site

Bonds that give enzyme unique 3D shape are broken

Which of the following statements about enzymes are correct?

Enzymes are made of DNA

Enzymes catalyse reversible reactions (both forward and backward)

Enzymes increase the rate of both forward and backward reaction

Enzymes catalyze virtually almost all reactions in the body

Unlock and Upgrade