12 Questions
What is the role of a cofactor in an enzyme-catalyzed reaction?
The cofactor is a metal ion or organic molecule that is needed for the enzyme-catalyzed reaction to take place.
What is the difference between the lock-and-key model and the induced-fit model of enzyme specificity?
The lock-and-key model states that the substrate must exactly match the shape of the active site, while the induced-fit model states that the active site can adjust to fit a variety of substrate shapes.
What is the difference between a competitive inhibitor and a noncompetitive inhibitor?
A competitive inhibitor binds to the enzyme's active site, while a noncompetitive inhibitor binds to the enzyme outside of the active site.
What is the role of zymogens in enzyme regulation?
Zymogens are inactive forms of enzymes that can be converted to the active form when needed.
How do enzymes function as diagnostic tools?
Enzymes are released from cells when they are damaged, and the presence of these enzymes in the body can be used to diagnose certain conditions.
How do enzymes affect the speed of chemical reactions?
Enzymes increase the speed of chemical reactions by lowering the energy requirement.
What is the main function of enzymes?
Increasing the rate of chemical reactions
How do enzymes differ from ordinary reactions?
Enzymes do not undergo chemical changes during catalysis
What suffix is commonly found at the end of enzyme names?
-ase
Which theory describes enzymes as having high specificity?
Lock-and-key theory
What happens to enzymes during catalysis?
They remain unchanged and can be reused
Which model or theory provides a simple way of explaining the function of enzymes?
Lock-and-key theory
Test your knowledge on enzymes in biochemistry. Learn about their catalytic power, specificity, and the theories describing their functions. Explore how enzymes can increase the rate of chemical reactions and how they can be reused repeatedly.
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