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Questions and Answers
What is the role of enzymes in biological reactions?
What is the role of enzymes in biological reactions?
- They participate directly in the reaction
- They form the products of the reaction
- They lower the activation energy barrier for the reaction (correct)
- They are substrates for the reaction
What is a holoenzyme?
What is a holoenzyme?
- A non-functional enzyme
- An enzyme with two active sites
- A complete, functional enzyme with its cofactors (correct)
- An enzyme without cofactors
What is the specific region of an enzyme where the substrate binds and catalysis occurs called?
What is the specific region of an enzyme where the substrate binds and catalysis occurs called?
- Substrate site
- Binding site
- Catalytic site
- Active site (correct)
What do enzymes do to the energy barrier required for a reaction to occur?
What do enzymes do to the energy barrier required for a reaction to occur?
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What are small organic molecules that function as cofactors called?
What are small organic molecules that function as cofactors called?
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What are cofactors that are tightly bound called?
What are cofactors that are tightly bound called?
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Study Notes
Enzymes in Biological Reactions
- Enzymes are biological molecules that catalyze chemical reactions, increasing their rates and efficiency.
Structure of Enzymes
- A holoenzyme is a complete enzyme consisting of a protein component (apoenzyme) and a cofactor.
- The specific region of an enzyme where the substrate binds and catalysis occurs is called the active site.
Enzyme Function
- Enzymes lower the energy barrier required for a reaction to occur, allowing the reaction to proceed more quickly and efficiently.
Cofactors
- Small organic molecules that function as cofactors are called coenzymes.
- Cofactors that are tightly bound to the enzyme are called prosthetic groups.
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Description
Test your knowledge of enzymes and enzyme catalysis with this quiz. Explore topics such as the structure of enzymes, their function as catalysts, specific regions where substrates bind, and the concept of substrate specificity.
