Biochemistry Lecture 9: Enzymes

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What are enzymes primarily responsible for?

Participating directly in the reaction

Increasing the energy barrier for substrates

Storing energy in the chemicals

Lowering the activation energy of reactions (correct)

What is the active region on an enzyme called?

Substrate-specific zone

Energy barrier site

Catalytic center (correct)

Reactant storage area

What is a holoenzyme composed of?

Cofactors only

Apoenzyme only

Apoenzyme and cofactors (correct)

Substrates only

What is the compound on which an enzyme acts called?

Substrate Signup and view all the answers

What do enzymes form when a substrate binds to their active site?

Enzyme-substrate complex Signup and view all the answers

What is the term for the energy barrier that substrates need to overcome before a reaction will occur?

Activation energy Signup and view all the answers

Which type of cofactor are small organic molecules called?

Coenzymes Signup and view all the answers

Which enzyme helps in the breakdown of lipids?

Lipases Signup and view all the answers

Which type of specificity do enzymes exhibit when they act on a particular steric or optical isomer?

Stereo chemical specificity Signup and view all the answers

What is the term for the model where the enzyme changes its shape for substrate binding?

Induced-fit model Signup and view all the answers

What are metal ions referred to when they are tightly bound as cofactors?

Metalloenzymes Signup and view all the answers

Which type of specificity do enzymes exhibit when they act on molecules with specific functional groups?

Group specificity Signup and view all the answers

Biochemistry Lecture 9: Enzymes

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Questions and Answers

What are enzymes primarily responsible for?

What is the active region on an enzyme called?

What is a holoenzyme composed of?

What is the compound on which an enzyme acts called?

What do enzymes form when a substrate binds to their active site?

What is the term for the energy barrier that substrates need to overcome before a reaction will occur?

Which type of cofactor are small organic molecules called?

Which enzyme helps in the breakdown of lipids?

Which type of specificity do enzymes exhibit when they act on a particular steric or optical isomer?

What is the term for the model where the enzyme changes its shape for substrate binding?

What are metal ions referred to when they are tightly bound as cofactors?

Which type of specificity do enzymes exhibit when they act on molecules with specific functional groups?

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