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Questions and Answers
What is the process by which pepsinogen becomes active?
What is the process by which pepsinogen becomes active?
- Allosteric modification
- Proteolysis (correct)
- Hydrolysis
- Phosphorylation
What characteristic distinguishes isoenzymes from one another?
What characteristic distinguishes isoenzymes from one another?
- Amino acid sequence (correct)
- Substrate specificity
- Optimal pH
- Catalytic activity
According to the lock and key theory, what is the shape of the active site?
According to the lock and key theory, what is the shape of the active site?
- Complementary to the substrate
- Variable and dynamic
- Induced by the substrate
- Fixed and unchangeable (correct)
What is the energy barrier that separates reactants from products in a chemical reaction?
What is the energy barrier that separates reactants from products in a chemical reaction?
What is the purpose of an enzyme in a chemical reaction?
What is the purpose of an enzyme in a chemical reaction?
What is the term for the high-energy state that occurs during formation of the product in a chemical reaction?
What is the term for the high-energy state that occurs during formation of the product in a chemical reaction?
What is the primary role of the active site in an enzyme molecule?
What is the primary role of the active site in an enzyme molecule?
What happens to the enzyme at the end of a catalyzed reaction?
What happens to the enzyme at the end of a catalyzed reaction?
What is the unit of measurement for enzyme activity?
What is the unit of measurement for enzyme activity?
What is the term for an enzyme that acts on one substrate only?
What is the term for an enzyme that acts on one substrate only?
What is the term for the complex formed when an enzyme binds to a substrate?
What is the term for the complex formed when an enzyme binds to a substrate?
How many times faster are enzyme-catalyzed reactions compared to uncatalyzed reactions?
How many times faster are enzyme-catalyzed reactions compared to uncatalyzed reactions?
What type of enzyme specificity refers to acting on a particular type of chemical bond, regardless of the rest of the molecular structure?
What type of enzyme specificity refers to acting on a particular type of chemical bond, regardless of the rest of the molecular structure?
What is the term for an inactive enzyme that requires biochemical modification to be converted into its active form?
What is the term for an inactive enzyme that requires biochemical modification to be converted into its active form?
What is the purpose of compartmentalization of enzymes within specific organelles in the cell?
What is the purpose of compartmentalization of enzymes within specific organelles in the cell?
What type of enzyme specificity refers to the ability to act on a particular steric or optical isomer?
What type of enzyme specificity refers to the ability to act on a particular steric or optical isomer?
What is the term for enzymes that have different forms with the same catalytic activity, but differ in their physical properties?
What is the term for enzymes that have different forms with the same catalytic activity, but differ in their physical properties?
What is the process by which a zymogen is converted into its active form?
What is the process by which a zymogen is converted into its active form?
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